Your capstone change project begins this week when you identify a practice issue that you believe needs to change. The practice issue must pertain to a systematic review that you must choose from a List of Approved Systematic Reviews for the capstone proj

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Research

Original Investigation

Preventing 30-D ay Hospital Readmissions A Systematic Review and Meta-analysis of Randomized Trials Aaron L. Leppin. MD; Michael R. Gionfriddo, PharmD; Maya Kessler, MD; Juan Pablo Brito, MBBS; Frances S. Mair, MD; Katie Gallacher, MBChB; Zhen Wang, PhD; Patricia J. Erwin. MLS; Tanya Sylvester, BS; Kasey Boehmer, BA; Henry H. Ting, MD, MBA; M. Hassan Murad, MD; Nathan D. Shippee, PhD; V ictor M. Montori, MD

IMPORTANCE Reducing early (<30 days) hospital readmissions is a policy priority aimed at improving health care quality. The cumulative complexity model conceptualizes patient context. It predicts that highly supportive discharge interventions will enhance patient capacity to enact burdensome self-care and avoid readmissions.

OBJECTIVE To synthesize the evidence o f the efficacy o f interventions to reduce early hospital readmissions and identify intervention features-including their impact on treatment burden and on patients' capacity to enact postdischarge self-care-that might explain their varying effects.

DATA SOURCES We searched PubMed, Ovid MEDLINE, Ovid EMBASE, EBSCO CINAHL, and Scopus (1990 until April 1,2013), contacted experts, and reviewed bibliographies.

s t u d y SELECTION Randomized trials that assessed the effect o f interventions on all-cause or unplanned readmissions within 30 days o f discharge in adult patients hospitalized for a medical or surgical cause for more than 24 hours and discharged to home.

DATA EXTRACTION a n d SYNTHESIS Reviewer pairs extracted trial characteristics and used an activity-based coding strategy to characterize the interventions; fidelity was confirmed with authors. Blinded to trial outcomes, reviewers noted the extent to which interventions placed additional work on patients after discharge or supported their capacity for self-care in accordance w ith the cumulative complexity model.

m a in outcomes a n d measures Relative risk o f all-cause or unplanned readmission w ith or w ithout out-of-hospital deaths at 30 days postdischarge.

RESULTS In 42 trials, the tested interventions prevented early readmissions (pooled random-effects relative risk, 0.82 [95% Cl, 0.73-0.91]; P < .001; I2 = 31%), a finding that was consistent across patient subgroups. Trials published before 20 0 2 reported interventions that were 1.6 times more effective than those tested later (interaction P = .01). In exploratory subgroup analyses, interventions with many components (interaction P = .001), involving more individuals in care delivery (interaction P = .05), and supporting patient capacity for self-care (interaction P = .04) were 1.4,1.3, and 1.3 times more effective than other interventions, respectively. A post hoc regression model showed incremental value in providing comprehensive, postdischarge support to patients and caregivers.

CONCLUSIONS AND relevance Tested interventions are effective at reducing readmissions, but more effective interventions are complex and support patient capacity for self-care. Interventions tested more recently are less effective.

JAMA Intern Med. 2014:174(7):1095-1107. doLlO.lOOl/jamainternmed.2014.1608 Published online May 12,2014.

Author Affiliations: Author affiliations are listed at the end of this article.

Corresponding Author: Victor M. Montori, MD, Knowledge and Evaluation Research Unit, Department of Medicine, Mayo Clinic, 200 First StSW, Plummer Bldg, Rochester. MN 55905 (montori.victor @mayo.edu).

[J Supplemental con tent at jamainternalmedicine.com

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R e s e a rc h O r ig in a l In v e s tig a t io n P r e v e n tin g 3 0 - D a y H o s p ita l R e a d m is s io n s

E arly hospital readm issions have been recognized as a com m on and costly occurrence, particularly am ong el­ derly and high-risk patients. One in 5 Medicare benefi­

ciaries is readm itted w ithin 30 days, for example, at a cost of m ore th an $26 billion per year.1 To encourage im provem ent in th e quality o f care and a reduction in unnecessary health ex­ pense, policymakers, reim bursem ent strategists, and the US governm ent have m ade reducing 30-day hospital read m is­ sions a national priority.2"4 Achieving th is goal, however, re­ quires a more complete understanding of the underlying causes o f readm ission.

The cum ulative com plexity m odel (CuCoM)5 is a fram e­ work developed by our research group th at conceptualizes p a­ tie n t co n tex t as a balance b etw e en w orkload an d capacity (Figure 1). Workload consists o f all th e work of being a patient and includes efforts to u n d erstan d and plan for care, to enroll th e s u p p o rt o f o th e rs , an d to access an d u se h e a lth care services.6,7 Capacity is determ ined by th e quality and avail­ ability o f resources th a t patients can mobilize to carry out this work (physical an d m ental health, social capital, financial re­ sources, and environm ental assets). The CuCoM is novel in its consideration of th e effects o f treatm ent burden on patient con­ text, and it illustrates how infeasible, u n su p p o rted , and con- text-irreverent care can lead to poor health outcom es and re­ du ced h ea lth care effectiveness. Because p atien ts recently discharged from th e hospital are in a state o f extrem e physi­ ologic and psychological vulnerability,8 their capacity for en ­ acting self-care is low. The CuCoM predicts th at, unless suffi­ cient support is given to enhance patient and caregiver capacity to carry o u t th e work o f patienthood, placing highly b u rd en ­ some discharge dem ands on these patients will lead to poor outcom es and hospital readm ission.

To evaluate th e validity o f th e CuCoM and provide hy­ pothesis-generating work in th e understanding of patient con­ text, we chose to synthesize th e evidence on the efficacy of interventions to reduce early hospital readm issions. In p ar­ ticular, we sought to determ ine th e degree to w hich a n u m ­ ber o f intervention ch aracteristics-in clu d in g their im pact on p a tie n t cap acity an d w o rk lo a d -m ig h t acco u n t for d iffer­ ences in their effectiveness.

F ig u r e 1. T h e C u m u l a t i v e C o m p l e x i t y M o d e l

P a tie n t c o n t e x t is r e p r e s e n te d as a b a la n c e b e t w e e n w o r k lo a d a n d c a p a c ity .

T h is b a la n c e m u s t b e o p t im iz e d t o e n s u r e c a re e ffe c tiv e n e s s a n d im p r o v e

o u t c o m e s . In t u r n , t h e o u t c o m e s a c h ie v e d fe e d b a c k t o a f f e c t t h e

w o r k lo a d - c a p a c ity b a la n c e .

Methods

A registered protocol (PROSPERO CRD42013004773) guided the conduct o f this review,9 w hich we report in adherence to th e Preferred Reporting Item s for Systematic Reviews and M eta­ analyses (PRISMA) S tatem ent.10

Eligibility Criteria Eligible studies were random ized trials reported in English or Spanish, since 1990, th a t assessed th e effectiveness o f peri- discharge interventions vs any com parator on th e risk of early (ie, w ithin 30 days o f discharge) all-cause or u n p lan n ed read­ m issions w ith or w ith o u t out-of-hospital deaths. The in te r­ vention had to focus its efforts on th e hospital-to-hom e tra n ­ sition, perm it patients across arm s to have otherw ise similar in p atien t experiences, and be generalizable to contexts b e ­ yond a single p atien t diagnosis. Adult patients had to be a d ­ m itted from th e com m unity to an inpatient ward for at least 24 hours w ith a medical or surgical cause. Studies including o b ste tric or p sy ch iatric ad m issio n s or only in clu d in g d is­ charges to skilled n u rsin g or reh a b ilita tio n facilities w ere excluded.

Info rm ation Sources In co lla b o ra tio n w ith an e x p e rie n c e d re s e a rc h lib ra ria n (P.J.E.), w e se a rc h e d in April o f 2013 th e follow ing d a ta ­ b a s e s : P u bM ed, Ovid MEDLINE, Ovid EMBASE, EBSCO CINAHL, a n d S co p u s. T h e c o m p le te s e a rc h s tr a te g y is re p o rte d in eA ppendix 1 (in S u p plem ent). Two review ers (T.S. a n d A .L.L.) h a n d - s e a r c h e d th e b ib lio g ra p h ie s o f in c lu d ed stu d ie s an d rec en t review s. E xperts in th e field w ere asked to identify additional references.

Study Selection F our rev ie w ers (A.L.L., M.R.G., J.P.B., a n d T.S.) w o rk ed in d e p en d e n tly an d co n sid ered th e eligibility o f c an d id ate articles by exam ining th eir titles and abstracts, and th en th e full version o f articles identified as potentially eligible by at least 1 reviewer. Conflicts about th e eligibility of full articles w ere resolved by discussion an d consensus. Eligibility was delayed for studies reporting outcom es incompletely, p e n d ­ ing au th o r contact.

Data Collection After creating and piloting a standardized form, the review ­ ers (A.L.L., M.R.G., and J.P.B.), working independently and in duplicate an d using a w eb-based program (DistillerSR), ab ­ stracted details about th e p atien t population, th e in te rv en ­ tions com pared, and th e outcom es reported.

We abstracted details o f th e interventions tested verba­ tim from either th e trial report or a cited protocol, lim iting our focus to th e period o f hospitalization until 30 days after dis­ charge, and identifying th e “n et intervention” by selecting out activities th a t occurred in th e intervention arm b u t n o t in th e control arm . These activities w ere coded using a taxonom y adapted from H ansen e t al11 (Table 1). We also noted th e n u m ­ ber o f m eaningfully involved individuals participating in th e

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Preventing 30-Day Hospital Readmissions Original Investigation Research

intervention’s delivery and the number of meaningful inter­ actions these individuals had with patients. Meaningfully in­ volved individuals played a structured and requisite function in the delivery of central aspects of the intervention (eg, a phy­ sician who might be contacted only as needed would not be considered meaningfully involved). Similarly, meaningful pa­ tient interactions were defined as those that were the pro­ posed sources of the intervention’s effectiveness (eg, a nurse visiting a patient only to deliver educational materials but not to actually engage in educational activity would not be con­ sidered a meaningful interaction). Two team members (A.L.L. and M.R.G.) created summary descriptions of the interven­ tions in a standardized format; these were shared with each author to confirm their fidelity to what happened in the trial.

After calibrating judgments on a pilot sample, 2 raters fa­ miliar with the CuCoM (F.S.M. and K.G.), not involved in data collection and blinded to trial results, evaluated each stan­ dardized intervention description on a scale of l (substan­ tially decrease) to 4 (no effect) to 7 (substantially increase) to reflect the degree to which the intervention was likely to affect patient workload and patient capacity for self-care. The im­ pact on patient capacity was rated with perfect agreement 50% of the time and within l point of difference in 42% of cases (8% differed by 2 points). Because no interventions were rated to decrease patient capacity and all mean ratings fell within the range of 4.0 to 5.5, we elected to dichotomize the variable (threshold of >5 for increasing capacity) for analysis. Work­ load was more difficult to assess reliably: perfect agreement and minor disagreement (±1 point) were seen in 29% and 44% of cases, respectively, with 27% of cases differing by 2 or more points. This variable was divided into 3 categories (increase, decrease, no change).

For each included trial, we extracted or computed the risk of early readmission for each arm, analyzing patients as ran­ domized (intention to treat analysis). We used the number ran­ domized as the denominator except when the number of pa­ tients discharged was reported and differed from the number randomized. We selected the outcome to extract on the basis of an ad hoc hierarchy of outcomes of interest, with priority given to unplanned readmissions, then to all-cause readmis­ sions, and finally to the composite end points of unplanned and all-cause readmissions plus out-of-hospital deaths, re­ spectively. Outcomes were extracted and analyzed at the lon­ gest period of follow-up, up to 30 days from discharge. Exami­ nation of trials reporting the effect of interventions on more than 1 of these outcomes revealed that treatment effects were consistent across them (data not shown).

Risk o f Bias Two raters (A.L.L. and M.K.) worked independently and in du­ plicate to determine the extent to which each trial was at risk of bias using a standardized form based on the Cochrane Col­ laboration’s tool.12 The assessment considered the quality of the randomization sequence generation, allocation conceal­ ment, blinding of outcome assessors, the potential for miss­ ing outcomes (ie, likelihood of missing readmissions to other hospitals), and the proportion of patients lost to follow-up. For missing outcomes, “high risk of bias” was assigned when the

Table 1. A c tiv ity -B a s e d C odin g F ra m e w o rk f o r D ischarge In te rv e n tio n s

Label A ctivity Observed

Discharge planning

Simply thinking about and formalizing an approach to prepare for discharge when this did not occur in any way in the control arm

Case management

Logistical coordination of care and/or resources not specifically focused on self-management and either not occurring in control arm or occurring to lesser degree

Telephone follow-up

Use of a telephone or videophone for provider-initiated communication after discharge that does not occur in the control arm

Telemonitoring Use o f remote technology designed fo r the patient to transm it objective measures of health status w ith or w ithout connected subjective assessment

Patient education

Patient-directed education related to diagnosis or treatm ent rationale but not focused on encouraging self­ management and not occurring in control arm

Self-management Patient-directed education or coaching directly focused on improving patient's ability to self-manage care needs that does not happen in control arm

Medication intervention

Medication reconciliation or special education aimed at improving medication understanding or adherence; often conducted by a pharmacist but need not be

Home visits Physical visitation by intervention provider to patient's place of residence when this does not happen in control arm

Follow-up scheduled

Scheduling of a follow -up visit prior to discharge when this is not done in the control arm or is done less reliably

Patient-centered discharge instructions

Some difference in the form at or usability of discharge materials to make them more accessible or relevant compared w ith control

Clinician continuity

Increased provider presence on both sides o f the hospital- to-hom e transition compared w ith control; may include involvement o f PCP in inpatient care or strategic follow -up w ith inpatient clinician after discharge or "bridging" clinician

Timely follow-up Postdischarge follow -up visit or communication with patient when this either does not occur or occurs at a later date in the control arm

Timely PCP communication

Engagement with PCP in communication about patient status when this either does not occur or occurs at a later date in the control arm

Patient hotline Presence of an open line fo r patient-initiated communication when this either does not exist in the control arm or is more restricted in availability or usefulness

Rehabilitation intervention

Patient-directed rehabilitation efforts that are not entirely diagnosis specific but aimed at improving functional status and do not exist in the control arm

Streamlining A general streamlining o f services provided, often with dedicated assignment of responsibility, when this does not occur in the control arm

Making requisite Increasing the use or quality of services currently available but underutilized compared w ith the situation in the control arm

Other Special situations unique to the intervention (eg, caregiver education, peer mentoring)

Abbreviation: PCP, prim ary care provider.

readmissions data came from internal health system records only. To assess for publication bias, we examined a funnel plot for asymmetry and conducted asymmetry regression accord­ ing to Sterne and Egger13 and determined the associated P value.

Data Synthesis We used random-effects meta-analyses to estimate pooled risk ratios and 95% confidence intervals for early readmission.14,15 We tested for heterogeneity of effect on this outcome using the Cochran Q x2 te st16 and estim ated between-trial inconsis­ tency not due to chance using the P statistic.17

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To explore th e effects o f p atien t, intervention, and o u t­ come characteristics on th e im pact o f m easured intervention effectiveness, we conducted planned subgroup analyses, te st­ ing variables 1 at a tim e.

Patient characteristics tested were age (m ean >65 years or not), diagnosis (h eart failure or o th er), an d h o sp ital w ard (general medical or other). Intervention characteristics tested included th e num ber o f u n iq u e activities involved in th e in ­ tervention, th e n um ber o f unique individuals or roles m ean­ ingfully involved in its delivery, the minimum num ber of m ean­ in g fu l p a tie n t in te ra c tio n s o ccu rrin g w ith in 30 days, th e location o f th e intervention activity (ie, w h eth er it occurred entirely during th e inpatient stay, after discharge, or as a com ­ bination th a t “bridged” th e transition), w h eth er th e interven­ tion was rated to increase or decrease p atien t w orkload, and w h eth er th e intervention w as rated to increase p atien t capac­ ity (no intervention was found th a t decreased patient capac­ ity for self-care). Ad hoc variables tested were year o f publi­ c a tio n a n d ty p e o f o u tc o m e r e p o r te d (ie , u n p la n n e d readm issions vs other).

In form ed by th e findings o f th e ex p lo rato ry subgroup analyses and our initial hypotheses, we constructed a post hoc m etaregression m odel to te st a variable th a t reflected th e d e­ gree to w hich discharge interventions provided com prehen­ sive p atien t and caregiver support. This “com prehensive su p ­ p o rt” variable could re tu rn values w ith in a range o f 0 to 4 “p oints” on th e basis o f w h eth er th e intervention (1) was rated to increase p atien t capacity, (2) had at least 5 (75th percentile o f distribution) unique intervention activities, (3) had at least 5 (75th percen tile o f d istrib u tio n ) m eaningful p atien t co n ­ tacts, and (4) h ad at least 2 (75th percentile o f distribution) in ­ dividuals involved in its delivery. We created 3 categories for this variable: interventions w ith zero points (category 1), in ­ terventions w ith 1 or 2 points (category 2), and interventions w ith 3 or 4 points (category 3). To control for changes in s ta n ­ dard care delivery over tim e, we adjusted on th e basis o f the year o f publication variable.

Results

Study Selection Our initial database search generated 1128 reports (eFigure 1 in Supplement). Through abstract and title screening, 256 re­ p o rts w ere id e n tified for fu ll-tex t review. D uring fu ll-tex t screening (agreement, 89%), 24 were selected for inclusion and 39 were set aside for au th o r contact prior to making a d eci­ sion. Of 7 potentially eligible studies identified from bibliog­ raphies and expert consultation, 2 were included and 1 was set aside for au th o r contact. Of th e 40 trials requiring au th o r con­ ta ct for a final eligibility decision, 21 were deem ed eligible. Of th e 48 apparently eligible trials, 1 was found ineligible after the au th o r confirm ed th a t readm ission data were collected only for readm issions related to th e index diagnosis.18 The final sam ple therefore com prised 47 trials from 46 reports.19"64

Of th e 47 eligible trials, 42 con trib u ted data for th e pri­ m ary meta-analysis, and 5 (those th a t reported num bers o f re­ adm issions rath er th a n th e n um ber o f p atien ts readm itted)

w ere analyzed separately.31,45,50,55,61 A com plete list o f ex­ cluded full-text studies w ith rationale for exclusion is avail­ able in eAppendix 2 (in Supplement).

Study Characteristics Table 2 d es crib es th e in c lu d e d tria ls . M any w ere sin g le ­ center trials taking place in academ ic m edical centers, enroll­ ing few patients (eg, 22 trials enrolled <200 patients), and re­ porting 30-day readm issions. Most interventions tested took place in b oth the inpatient and o u tp atien t settings. The coded activity analysis is reported in eTable 1 (in Supplement). In gen­ eral, interventions included anyw here from 1 to 7 unique ac­ tivities. Case m anagement, patient education, hom e visits, and self-m anagem ent support were com m only present in n et ac­ tivity descriptions (eTable 1 in Supplement). Trial authors re­ sponded to confirm ation requests for 34 of th e 47 n et in ter­ v e n tio n d e s c r ip tio n s . T h re e a u th o r s r e q u e s te d m in o r modifications and 1 au th o r m ade major modifications to these descriptions.

Most studies were at low risk o f bias (eTable 2 and eFig­ ure 2 in Supplement). The m ost com m on methodological limi­ tation of these trials was th e lack o f a reliable m ethod for deal­ ing w ith missing data.

Meta-analysis In th e 42 trials reporting readm ission rates, th e overall pooled relative risk (RR) o f readm ission w ithin 30 days w as O.82 (95% Cl, 0.73-0.91; P < .001) (Figure 2). Inconsistency across trials was low (P = 31%). Funnel plot exam ination show ed asym ­ m etry suggestive o f publication bias in th e context o f smaller studies (eFigure 3 in Supplem ent), and the Egger test was sig­ nificant (P = .02). The 5 trials reporting n u m ber o f readm is­ sions (rather th an num ber o f patients w ith readm issions) had a pooled relative risk o f readm ission o f 0.93 (95% Cl, 0.72- 1.20; P = 23% ; P = .59). Although this result was consistent with th e risk found in trials reporting readm ission rates (interac­ tio n P = .38), we opted n o t to include th ese trials in subgroup analyses.

Subgroup analyses failed to find an interaction betw een trial results and p atien t characteristics or outcom e m easured (Table 3). A num ber o f intervention characteristics, however, d id in te ra c t w ith m e a su re d effec tiv e n ess. T h ese in c lu d e w hether th e intervention was rated to augm ent patient capac­ ity for self-care (RR, 0.68 [95% Cl, 0.53-0.86] w hen it was and RR, 0.88 [95% Cl, O.8O-O.97] w h en it w as n o t; in te ractio n P = .04), w h eth er th e intervention had at least 5 unique, com ­ p o n en t activities (RR, 0.63 [95% Cl, 0.53-0.76] w h en it did and RR, 0.91 [95% Cl, 0.81-1.01] w h e n it d id n o t; in te ra c tio n P = .001), an d w h eth er th e in terv en tio n had at least 2 in d i­ viduals involved in delivery (RR, 0.69 [95% Cl, O.57-O.84] w hen it did and RR, 0.87 [95% Cl, 0.77-0.98] w hen it did not; in ter­ action P = .05). Studies testin g in terventions m ore recently were associated w ith reduced effectiveness (RR, 0.89 [95% Cl, O.81-O.97] w hen published in 2002 or later and RR, 0.56 [95% Cl, 0.40-0.79] w h en p u b lis h e d p rio r to 2002; in te ra c tio n P = .01). Other characteristics of th e interventions, such as their rated effect on patient w orkload and th e site o f delivery, had no significant interaction w ith th e intervention effect.

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Table 2. Study Characteristics3

Source Setting Population Added Intervention Program

Baseline Control Activity

Outcome Time Reported

Patients Discharged,

No.

Activities6/ People'/

Interactions8 Included in

Intervention, No. Capacity' Workload' Location9

Melton e ta l,19 2012

48 US states

Commercially insured for 3 acute DRGs

Risk-prioritized telephone follow-up

Nonprioritized telephone follow-up

UR, 1 mo 3988 1/1/1 4.0 3.5 OP

Marusicetal,20 2013

Academic hospital in Croatia

Elderly patients receiving >2 medications for chronic disease

Specialized pharmacotherapeutic counseling

Standard discharge planning and usual information about drugs from physician

UR, 1 mo 160 2/1/1 4.0 3.5 IP

Altfeldetal,21 2012

US Elderly patients receiving >7 medications with psychosocial need

Targeted telephone follow-up program

Standard discharge planning without any follow-up contact

ACR, 1 mo 906 2/1/1 5.0 2.0 OP

Davis eta l,22 2012

Academic center, US

Patients with HF with mild cognitive impairment

Self-management focused education program

Standard discharge HF teaching and booklet

ACR, 1 mo 125 5/1/2 5.0 3.5 Both

Bowles et al,23 2011

Urban community, US

Mostly black patients with HF under specific home care agency

Telehomecare substitution of traditional home care

Clinical pathway for HF and home care

ACR, 1 mo 218 1/2/5 4.0 5.5 OP

Finn etal,24 201 l h

Academic center, US

General medical patients of academic center; approximately 25% discharged toSNF

Embedded nurse practitioner into academic team to improve discharge process

Standard discharge planning with follow-up scheduled by resident

ACR, 1 mo 646 2/1/1 4.0 2.5 IP

Wong e ta l,25 2011

Large general hospital, Hong Kong

Elderly general medical population

Use of nurse case managers and trained volunteers to improve transition through health-social partnership

Usual discharge planning for follow-up and support

ACR, 1 mo 686 4/3/5 4.5 3.5 Both

Leventhal e ta l,26 2011

University hospital, Switzerland

Elderly patients with HF

Outpatient, interdisciplinary education and support program

Standard care with HF consultation, education booklet

ACR, 1 mo 34 5/1/4 4.5 4.0 OP

Rytter et al,27 2010

Single center, Denmark

Elderly patients from medical or geriatric ward

Use of mandatory home visits to improve follow-up from PCP and district nurses

Standard discharge procedures and letters

ACR, 1 mo 331 4/2/2 4.0 2.5 OP

Koehler etal,28 2009

Academic center, US

Elderly general medical patients expected to return to home or assisted living

Supplemental care bundle that shifted responsibilities from nurses to care coordinators and added follow-up

Nursing staff do medication reconciliation, discharge medication teaching, and education; pharmacist review

UR, 1 mo 41 6/2/5 4.5 4.0 Both

Braun,29 2009 Medical center, Israel

General medical patients

Use of tight telephone Standard follow-up, especially discharge to improve adherence planning and

summary

ACR, 1 mo 400 1/1/2 4.5 3.0 OP

Courtney eta l,30 2009

Tertiary center, Australia

Elderly general medical patients at high risk

Individualized, exercise-based care plan for elderly

Routine discharge and rehabilitation advice, planning

UR, 1 mo 128 6/2/5 5.0 5.0 Both

Jack e ta l,31 2009

Academic, urban, safety net center, US

General medical patients; 51% black

Standardized discharge package to minimize failures using discharge planners and pharmacists

Similar to intervention but uncoordinated

ACRE, 1 mo 738 6/2/3 5.0 2.5 Both

(continued)

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Table 2. Study Characteristics3 (continued)

Activities3/ People1/

Interactions3

Source Setting Population Added Intervention Program

Baseline Control Activity

Outcome Time Reported

Patients Discharged,

No.

Included in Intervention,

No. Capacity' Workloadf Location9

Wakefield e ta l,32 2008

VA medical center, Iowa, US

Men w ith HF; mean age, 69 y

Telehealth-facilitated Usual discharge postdischarge support teaching and program follow -up

ACR, 1 mo 148 2 /1 /5 5.0 5.0 OP

Balaban e ta l,33 2008

Small Culturally and community linguistically teaching diverse general hospital, US medical or

surgical patients

Program to promptly reconnect patients to medical home through discharge form

Standard discharge planning and instruction

ACR, 1 mo 96 3 /2 /2 5.0 2.5 Both

Wong e ta l,34 2 0 08

3 Regional hospitals, Hong Kong

Elderly patients readmitted to department of medicine

Preventive, postdischarge home visits fo r high-risk patients

Standard discharge planning and instruction

UR, 1 mo 354 2 /1 /2 4.0 4.0 Both

Coleman e ta l,35 2006

Single center, US

Elderly medical patients who were in capitated delivery system; approximately 20% discharged to SNF

Use o f transition coaches and personal health record to equip patients and caregivers to be more active in care

Not well reported

UR, 1 mo 750 5 /1 /5 4.5 5.0 Both

Linne et al,3e 2006

Multiple community hospitals, Sweden

Patients w ith HF; discharge disposition not reported

Use computer-based education session in discharge process

Standard HF education and materials

ACR, 1 mo 230 2 /0 /0 4.0 4.5 Both

Casas et al,37 2006

2 Tertiary centers, 1 in Spain and l i n Belgium

Elderly patients w ith COPD

Integrated care plan Standard to generate synergy discharge and avoid redundancy protocol w ithout between inpatient and support o f nurse outpatient care teams or call center fo r patients with COPD

ACR, 1 mo 155 7 /3 /5 5.0 4.5 Both

Riegel et al,38 2006

2 Mexican Community Americans with hospitals, HF who were southern old, ill, and California, poorly US acculturated

Telephone case management program to improve discharge transition in Mexican Americans

Nonstandardized, ACR, 1 mo HF education often in English

135 5 /1 /1 5.5 3.0 OP

Koelling e ta l,39 2 005

University Selected hospital, US patients w ith HF;

mean age, 65 y

Single predischarge education session

Standard discharge information and education, booklet

ACR, 1 mo 223 2 /1 /1 4.5 4.5 IP

Mejhert e ta l,40 2 0 04

University hospital, Sweden

Elderly patients w ith HF

Nurse-driven, protocol-based outpatient management program

Standard discharge care; usual follow -up

ACR+D, 1 mo

196 3 /2 /1 5.0 4.5 OP

Kwok et al,41 2004

2 Acute hospitals, Hong Kong

Elderly patients w ith chronic lung disease at high risk

Community nurse-supported program based on weekly home visits

Standard follow -up with home visits as needed

UR, lm o 157 4 /1 /5 5.5 4.5 Both

Doughty et a l 42 2002"

Single Patients w ith HF; center, New dispositions not Zealand reported

Outpatient, integrated management program for HF

Usual care under PCP

ACR, 1 mo 197 6 /3 /1 4.5 5.0 OP

Jaarsma e ta l,43 1999

University Elderly patients Hospital, w ith HF; mean Netherlands age, 73 y

Nurse-led education and support program w ith follow -up home visit

Usual care; no structured education, follow -up call, or home visit

ACR, 1 mo 179 3 /1 /3 4.0 3.5 Both

Naylor et al,44 1999

2 Urban academic hospitals, US

Elderly medical and surgical patients; 45% black

Advanced practice nurse-directed program that stressed continuity, home and telephone follow -up

Routine discharge planning and home care

ACR, 1 mo 363 5 /1 /4 5.5 2.5 Both

Stewart et al,45 1998

Tertiary referral center, Australia

General medical and surgical patients; 83% considered high

Risk-targeted, home- based intervention by nurse and pharmacist

Discharge planning with follow -up w ithin 2 wk

UR+DE, 1 mo

762 5 /2 /3 5.0 2.5 Both

risk

(continued)

1100 JAMA Internal Medicine July 2014 Volume 174, Number 7 jamainternalmedicine.com

Preventing 30-Day Hospital Readmissions Original Investigation Research

Table 2. Study Characteristics3 (continued)

Activities11/ People11/

Interactions11 Outcome Patients Included in

Added Intervention Baseline Control Time Discharged, Intervention, Source Setting Population Program Activity Reported No. No. Capacity' Workload1 Location9 Dunn et al,46 1995

Geriatric hospital, England

Geriatric ward patients; mean age, 83 y

Single home visit from Usual discharge public health nurse process

ACR, 1 mo 204 2 /1 /1 4.5 3.0 OP

Rich et al,47 1995

Single academic center, US

High-risk, elderly patients w ith HF

Nurse-directed, m ultidisciplinary intervention w ith home visit follow -up

Conventional care by PCP

ACR, 1 mo 274 6 /4 /5 5.5 2.0 Both

Naylor et al,48 1994

Single university hospital, US

Elderly patients w ith or w ithout caregiver for medical cardiac diagnosis

Individualized, comprehensive program directed by clinical nurse specialists, including home follow -up

Robust but not individualized routine discharge plan

ACR, 2 wk 142 5 /1 /4 4.5 2.0 Both

Naylor et at,48 1994

Single university hospital, US

Elderly patients w ith or w ithout caregiver for surgical cardiac diagnosis

Individualized, comprehensive program directed by clinical nurse specialists, including home follow -up

Robust but not individualized routine discharge plan

ACR, 2 wk 134 5 /1 /4 4.5 2.0 Both

Naylor et al,49 1990

Urban medical center, US

Elderly general medical or surgical patients

Comprehensive, individualized discharge planning protocol w ith home follow -up directed by nurse specialists

Nurse-directed routine discharge planning

ACR, 2 wk 40 4 /1 /4 4.0 3.0 Both

Kulshreshtha e ta l,50 2010

Urban Patients w ith HF; teaching could enter hospital, US study up to 2

weeks after discharge

Remote monitoring Not well follow -up program fo r described ambulatory patients

ACRE, 1 mo 150 2 /1 /5 5.5 5.5 OP

Graumlich e ta l,512009h

Tertiary General medical teaching patients at high hospital, US risk of

readmission

Discharge software to improve communication and address deficiencies

Usual care with handwritten discharge forms

ACR, 1 mo 631 3 /1 /0 4.0 3.0 IP

Atienza et al,52 2004

3 Tertiary university hospitals, Spain

Patients w ith HF; mean age, 68 y

Hospital discharge and outpatient disease management program

Variable and nonstructured; PCP follow -up

ACR, 1 mo 338 5 /2 /2 4.5 4.0 Both

R ie g e le ta l,53 2004

2 Hospitals in suburban Southwest, US

Patients w ith HF in integrated health system; mean age, 73 y

Use of peer mentors to improve self-care in recently discharged patients

Inpatient HF education; support groups available

ACR, 1 mo 88 1 /1 /2 4.5 3.0 OP

Stowasser e ta l,54 2 0 02

2 Large hospitals, Australia

General medical and surgical patients

Medication liaison service to improve communication of medication-related issues through discharge process

Routine care and pharmacist medication review, discharge planning

UR, 1 mo 240 3 /1 /0 4.0 3.0 IP

Li e ta l,55 2012 Academic Elderly patients center, New and their fam ily York, US caregivers

Training of fam ily caregivers to prepare fo r anticipated postdischarge role

Routine care w ith practical information given to caregivers

ACRE, 2 wk 407 1 /0 /0 4.5 3.5 IP

Shyu e ta l,56 2005

Large, single center, Taiwan

Elderly patients w ith hip fracture

Interdisciplinary program of geriatric consultation, rehab, and discharge planning service

Routine care and inpatient physical therapy w ithout home visits

ACR, 1 mo 137 4 /3 /5 5.5 3.5 Both

Angermann e ta l,57 2012

9 Centers, Germany

Patients w ith HF; mean age, 69 y

Nurse-coordinated disease management program that emphasized a "call and care center"

Standard discharge planning and follow -up

ACR, 1 mo 715 4 /1 /5 4.5 4.5 Both

Naylor e ta l,58 2004

5 Academic and

Elderly patients with HF; 36%

Advanced practice nurse-directed care

Standard, site- specific HF

ACR+D, 1 mo

239 6 /1 /5 5.0 3.0 Both

community black program with discharge hospitals, emphasis on comorbid planning and US and chronic condition follow -up

management; included home follow -up

(continued)

jamainternalmedicine.com JAMA Internal Medicine July 2014 Volume 174, Number 7 1101

R e s e a rc h O r ig in a l I n v e s t ig a t io n P r e v e n tin g 3 0 - D a y H o s p ita l R e a d m is s io n s

T a b le 2 . S t u d y C h a r a c t e r i s t i c s 3 ( c o n t i n u e d )

S o u rce S e ttin g P o p u la tio n A d d e d I n te r v e n tio n P ro g ra m

B a s e lin e C o n tr o l A c t i v i t y

O u tc o m e T im e R e p o rte d

P a tie n ts D is c h a rg e d ,

N o.

A c t iv it ie s 6/ P e o p le 1/

In te r a c tio n s 6 In c lu d e d in

I n te r v e n tio n , N o. C a p a c ity " W o r k lo a d ' L o c a tio n 9

S tro m b e rg e t a l , 59 2 0 0 3

1 U n iv e r s ity E ld e rly p a tie n ts a n d 2 w it h HF c o u n ty h o s p ita ls , S w e d e n

R e q u is ite f o l lo w - u p in s p e c ia liz e d , p r o t o c o l- d r iv e n , n u r s e -le d HF c lin ic

C o n v e n tio n a l p r im a r y ca re f o llo w - u p

ACR+D, 1 m o

1 0 6 5 / 1 / 1 5 .0 3 .5 OP

H ansen e t a l , 60 1 9 9 5

U n iv e r s ity H ig h ly s e le c te d H o m e v is it f o llo w - u p h o s p ita l, p a tie n ts f r o m p ro g ra m f o r h ig h ly D e n m a rk s u b a c u te g e r ia tr ic ta r g e te d e ld e r ly

w a rd n e e d in g p o p u la tio n h o m e r e h a b ilita tio n and m e d ic a l a nd s o c ia l s u p p o r t

D is c h a rg e s u m m a ry s e n t a n d s ta n d a rd s u p p o r t a rra n g e d

ACR, 1 m o 1 9 3 4 / 2 / 2 5 .0 3 .5 OP

M a slo ve e t a t,61 2 0 0 9 h

S in g le G e n e ra l m e d ic a l a c a d e m ic p a tie n ts ; c e n te r, a p p r o x im a te ly Canada 8 0 % d is c h a rg e d

h o m e

D e v e lo p m e n t o f m o re u s e fu l a nd s ta n d a rd iz e d d is c h a rg e s u m m a ry

S ta n d a rd , a tte n d in g p h y s ic ia n - g e n e ra te d d is c h a rg e s u m m a rie s a nd p la n n in g

ACRE, 1 m o 2 0 9 2 / 1 / 0 4 .0 3 .5 IP

F o rs te r e t a l , 62 2 0 0 5

2 C am p u se s G e n e ra l m e d ic a l o f a p a tie n ts ; m e an te a c h in g a g e , 6 6 y h o s p ita l, Canada

In te g r a tio n o f d e d ic a te d c lin ic a l n u rs e s p e c ia lis t in to c a re te a m t o f a c ilit a t e d is c h a rg e p la n n in g p roce ss

R e g u la r d is c h a rg e c a re p la n n in g

ACR+D, 1 m o

3 6 1 3 / 1 / 1 4 .0 3 .0 B o th

D udas e t a l,63 2 0 0 1

S in g le G e n e ra l m e d ic a l a c a d e m ic s e rv ic e p a tie n ts c e n te r, US

P h a rm a c y s e rv ic e f o l lo w - u p c a ll

R e g u la r p h a rm a c y - f a c ilita te d d is c h a rg e p roce ss

ACR, 1 m o 2 2 1 2 / 1 / 1 4 .0 3 .0 OP

P a rry e t a l , 64 2 0 0 9

2 F e e - fo r - s e r v ic e Use o f t r a n s it io n C o m m u n ity M e d ic a re p a tie n ts co a c h e s a nd p e rs o n a l h o s p ita ls , in s in g le h e a lth h e a lth r e c o rd t o e q u ip US s y s te m ; in c lu s io n p a tie n ts and

c r ite r ia d e s ire d t o c a re g iv e rs t o a s s e rt c a tc h p a tie n ts m o re a c tiv e r o le in d is c h a r g in g t o c a re tr a n s it io n S N F - d id n o t r e p o r t d is p o s itio n s

N o t w e ll re p o r te d

UR, 1 m o 9 8 5 / 1 / 5 5 .0 2 .5 B o th

A b b r e v ia tio n s : AC R , a ll-c a u s e r e a d m is s io n r a te ; A C R +D , a ll-c a u s e r e a d m is s io n c N u m b e r o f in d iv id u a ls m e a n in g f u lly in v o lv e d in d e liv e r y o f t h e in t e r v e n tio n ,

a n d o u t - o f- h o s p ita l d e a t h ra te ; A C R E , a ll-c a u s e r e a d m is s io n e v e n t c o u n t; B o th , a |y|jn j m u m n u m b e r o f m e a n in g f u l h u m a n in t e r a c t io n s in i n t e r v e n t io n d e liv e ry . a c t i v it y o c c u r r e d in b o t h in p a t ie n t a n d o u t p a t ie n t e n v ir o n m e n ts ; C O P D , c h r o n ic „ . , ,,

. . , ,. ,. . . . . . . . . e R a te d lik e lih o o d o f i n t e r v e n t io n t o a f f e c t p a t ie n t c a p a c ity f o r s e lf- c a r e o n a o b s t r u c t iv e p u lm o n a r y d is e a s e ; DRG , d ia g n o s is - r e la te d g r o u p ; HF, h e a r t f a ilu r e ; , , , , . „ . , .

,, .. .. . . . . . . . . „ .. .. ,. s c a l e o f l ( s u b s t a n t i a l ly d e c r e a s e ) t o 4 ( n o e f f e c t ) t o 7 ( s u b s t a n t i a l l y in c r e a s e ) . IP, a ll a c t i v it y o c c u r r e d in i n p a t ie n t e n v ir o n m e n t ; OP, a ll a c t iv it y o c c u r r e d in o u t p a t ie n t e n v ir o n m e n t ; SNF, s k ille d n u r s in g f a c ility ; U R, u n p la n n e d f R a te d lik e lih o o d o f in t e r v e n t io n t o im p o s e w o r k o r b u r d e n o n p a t ie n t o n a

r e a d m is s io n ra te ; U R + D E , u n p la n n e d r e a d m is s io n a n d o u t - o f- h o s p ita l d e a th s s c a le o f 1 ( s u b s t a n t ia lly d e c re a s e ) t o 4 ( n o e f f e c t ) t o 7 ( s u b s t a n t ia lly in c re a s e ),

e v e n t c o u n t ; US, U n ite d S ta te s ; V A . V e te r a n s A ffa ir s . s S e ttin g ( in p a tie n t , o u t p a t ie n t , o r b o t h ) w h e r e in t e r v e n t io n a c t i v it y o c c u r r e d .

3 I n t e r v e n t io n a n d b a s e lin e /c o n tr o l a c tiv it ie s w e r e s y s te m a tic a lly c o d e d in h C lu s te r - r a n d o m iz e d s tu d y .

g r e a t e r d e ta il th a n c a n b e e x p r e s s e d in t h is t a b le (s e e e T a b le 1 in S u p p le m e n t) .

b N u m b e r o f a c t iv it ie s in t h e i n t e r v e n t io n as e v a lu a te d b y c o d in g s tr a te g y f r o m

T a b l e !

P o s t H o c M e t a r e g r e s s io n A n a ly s is

D e sp ite p o te n tia l c o lin e a rity o f th e c o n tr ib u tin g v a ria b le s , m e ta re g re ssio n sh o w e d a sig n ifican t a n d in c re m e n ta l effect o f “c o m p r e h e n s i v e s u p p o r t ” o n r e d u c i n g r e a d m is s io n s (Table 4). C ategory 3 com prised 7 in terv en tio n s.28,3037'47'56,58,64 C om pared w ith cate g o ry 1 in te rv e n tio n s, th e s e w ere a sso c i­ a te d w ith a relativ e risk o f re a d m iss io n o f 0.63 (95% Cl, 0.43- 0 .91; P = .02). C ategory 3 in te rv e n tio n s u s e d a c o n siste n t an d c o m p le x s tra te g y th a t e m p h a s iz e d th e a s s e s s m e n t a n d a d ­ d re ssin g o f facto rs re la te d to p a tie n t c o n te x t a n d ca p a c ity for self-care (including th e im p act o f com orbidities, fu nctional s ta ­ tu s , caregiver capabilities, socioeconom ic factors, p o te n tia l for

self-m a n a g e m e n t, a n d p a tie n t a n d caregiver goals for care). T h ese in te rv e n tio n s co o rd in a te d care across th e in p a tie n t-to - o u tp a tie n t tr a n s itio n a n d in v o lv ed m u ltip le p a tie n t in te ra c ­ tio n s; all b u t l 28 inv o lv ed p a tie n t h o m e visits.

Discussion

O u r F in d in g s

T he b o d y o f ra n d o m iz e d trial ev id en c e show s a c o n siste n t and b en eficial effect o f te s te d in te rv e n tio n s o n th e risk o f 30-day read m issio n s. E x p lo rato ry su b g ro u p a n aly ses su g g est th a t ef-

1 1 0 2 J A M A I n t e r n a l M e d ic in e J u ly 2 0 1 4 V o lu m e 174, N u m b e r 7 ja m a in t e r n a lm e d ic in e .c o m

P r e v e n t in g 3 0 - D a y H o s p ita l R e a d m is s io n s O r ig in a l I n v e s t ig a t io n Research

Figure 2. Results o f Prim ary Meta-analysis

Study RR (95% Cl) Naylor e ta l,49 1990 0.33 (0 .0 4 -2 .9 4 )

Naylor e ta l,48 1994 0 .2 7 (0 .0 8 -0 .9 1 ) Naylor et a l 48 1994 0.69 (0 .2 3 -2 .0 8 )

Dunn et al,46 1995 1.13 (0 .6 1 -2 .08 ) Rich et a l,47 1995 0.69 (0 .4 2 -1 .1 3 )

Hansen e ta l,60 1995 0 .3 0 (0 .1 6 -0 .5 7 ) Jaarsma e ta l,43 1999 0.89 (0 .4 3 -1 .8 5 ) Naylor e ta l,44 1999 0 .3 5 (0 .1 9 -0 .6 5 ) Dudas e ta l,63 2 001 0.61 (0 .3 6 -1 .0 5 ) Doughty et al,42 2002 1 .1 4 (0 .6 4 -2 .0 4 ) Stowasser et al,54 2002 0 .8 4 (0 .3 7 -1 .9 3 ) Stromberg et a l,59 2003 0 .6 1 (0 .3 5 -1 .0 9 ) M ejhert et al,40 2004 0.91 (0 .4 5 -1 .8 3 ) Kwok et al,41 2004 1 .1 8 (0 .8 0 -1 .7 4 )

Atienza et a l,52 2 0 04 0.57 (0 .3 1 -1 .06 ) Riegel and Carlson,53 2004 1.53 (0 .5 4 -4 .31 ) Naylor et a l,58 2004 0.51 (0 .3 0 -0 .88 ) Koelling et a l,39 2 0 05 0 .7 0 (0 .4 3 -1 .1 5 ) Shyu e ta l,56 2005 0 .6 1 (0 .1 5 -2 .4 5 )

Forster e ta l,62 2 0 05 1.35 (0 .8 4 -2 .16 ) Coleman e ta l,35 2006 0.70 (0 .4 5 -1 .07 )

Linne and Liedholm ,36 2006 1.05 (0 .6 3 -1 .77 ) Casas et a l,37 2006 0 .5 9 (0 .2 4 -1 .4 6 )

Riegel et a l,38 2 0 06 0 .7 9 (0 .3 8 -1 .6 3 ) Balaban e t a l, 33 2008 1 .0 4 (0 .2 8 -3 .9 3 ) Wong et a l,34 2008 0 .9 8 (0 .7 3 -1 .3 1 ) Wakefield e ta l,32 2008 0.66 (0 .3 0 -1 .4 6 ) Koehler et a l,28 2009 0.42 (0 .0 9 -1 .9 2 ) Braun et a l,29 2009 0.92 (0 .4 1 -2 .0 3 ) Courtney e t a l, 30 2009 0 .3 0 (0 .0 9 -1 .0 4 ) Graumlich e ta l,51 2009 0.97 (0 .6 6 -1 .45 ) Parry et a l,64 2 0 09 0.44 (0 .1 5 -1 .3 5 ) R y tte r e ta l,27 2010 0 .7 1 (0 .4 5 -1 .1 3 ) Bowles et a l,23 2011 0.83 (0 .4 6 -1 .49 ) Finn e ta l,24 2011 1 .1 6 (0 .8 5 -1 .6 0 ) Wong e ta l,25 2011 0.78 (0 .5 3 -1 .16 ) Leventhal e ta l,26 2011 0 .5 6 (0 .0 6 -5 .6 3 ) Melton e ta l,19 2012 0 .7 8 (0 .6 2 -0 .9 9 ) A ltfeld et a l,212012 1.05 (0 .7 7 -1 .43 ) Davis et a l,22 2012 1.15 (0 .5 8 -2 .28 ) Angermann et al,57 2012 1.09 (0 .7 1 -1 .66 )

Marusic e ta l,20 2013 1 .2 0 (0 .3 8 -3 .7 7 ) Overall effect (P<.001) 0.82 (0 .7 3 -0 .9 1 )

Heterogeneity: l 2 = 31%; P = .03

Favors Intervention

Favors Control

j

0.1 1.0 RR (95% Cl)

Weight, %

0.24

0.71

0.88

2.30

3.08

2.14

1.75

2.28

2.77

2.49

1.44

2.57

1.88 4.17

2.31

0.97

2.75

3.11

0.57

3.33

3.72

2.93

1.24

1.77

0.62

5.46

1.54

0.48

1.54

0.70

4.09

0.86

3.38

2.47

5.06

4.16

0.22 6.30

5.18

1.95

3.77

0.81

100.00

T T 1 10

S ize o f t h e d a ta m a r k e r c o r r e s p o n d s

t o t h e r e la tiv e w e ig h t a s s ig n e d in t h e

p o o le d a n a ly s is u s in g r a n d o m - e ffe c ts

m o d e ls . RR in d ic a te s r e la tiv e ris k .

fective interventions are more complex and seek to enhance patient capacity to reliably access and enact postdischarge care. In addition, interventions tested more recently are, in gen­ eral, less efficacious when compared with controls.

Our findings are consistent with the CuCoM in their sug­ gestion that providing comprehensive and context-sensitive support to patients reduces the risk of early hospital readmis­ sion; however, we could not identify an effect of rated inter­ vention workload on this risk.

Limitations and Strengths of This Review Many studies in this review were conducted in single, aca­ demic centers; this raises questions about applicability. Also,

the scales that we used to evaluate intervention effects on pa­ tient workload and capacity relied on global judgments (rather than criterion-based judgments) and are original to this work. To our knowledge, no validated scale exists to assess the po­ tential of an intervention to impose patient workload or treat­ ment burden and/or affect a patient’s capacity for self-care. Al­ though our raters were consistent in their assessm ents of interventions’ effect on patient capacity, their judgment of im­ pact on patient workload was less reliable. Particularly, raters believed that some burdensome interventions could be ben­ eficial if the patient had the capacity and resources to access and enact the care. Because the experience of treatment bur­ den is not constant between patients, an ideal analysis of its

ja m a in t e r n a lm e d ic in e .c o m JAMA Internal Medicine J u ly 2 0 1 4 V o lu m e 174, N u m b e r 7 1103

R e s e a rc h O r ig in a l I n v e s t ig a t io n P r e v e n tin g 3 0 - D a y H o s p ita l R e a d m is s io n s

T a b le 3 . S u b g r o u p A n a ly s e s

S tu d y S u b g ro u p C h a r a c te r is tic (N o . o f S tu d ie s in S u b g r o u p ) 3

R e a d m is s io n , R e la tiv e R isk ( 9 5 % C l) P V a lu e f o r In te r a c tio nS u b g ro u p C o m p a ris o n G ro u p

P a tie n t c h a r a c te r is tic s

HF ( 1 6 ) 0 .8 2 ( 0 . 7 0 - 0 . 9 5 ) 0 . 8 0 ( 0 . 6 9 - 0 . 9 3 ) .8 3

A g e > 6 5 y ( 3 6 ) 0 .7 9 ( 0 . 6 9 - 0 . 9 0 ) 0 .9 1 ( 0 . 7 4 - 1 . 1 0 ) .2 4

F ro m g e n e r a l m e d ic a l w a r d ( 1 8 ) 0 . 8 0 ( 0 . 6 7 - 0 . 9 5 ) 0 . 8 3 ( 0 . 7 2 - 0 . 9 5 ) .7 9

I n te r v e n tio n c h a r a c te r is tic s

R a te d t o in c re a s e p a t ie n t c a p a c ity ( 1 6 ) 0 . 6 8 ( 0 . 5 3 - 0 . 8 6 ) 0 . 8 8 ( 0 . 8 0 - 0 . 9 7 ) .0 4

R a te d t o in c re a s e p a t ie n t w o r k lo a d ( 5 ) b 0 .7 7 ( 0 . 5 7 - 1 . 0 3 ) 0 .8 2 ( 0 . 7 1 - 0 . 9 6 ) .6 8

R a te d t o d e c re a s e p a t ie n t w o r k lo a d ( 1 9 ) b 0 .8 1 ( 0 . 6 7 - 0 . 9 8 ) 0 .8 2 ( 0 . 7 1 - 0 . 9 6 ) .9 0 A b b r e v ia tio n : HF, h e a r t fa ilu r e .

D e liv e re d b y 2 o r m o re in d iv id u a ls ( 1 3 ) c 0 . 6 9 ( 0 . 5 7 - 0 . 8 4 ) 0 .8 7 ( 0 . 7 7 - 0 . 9 8 ) .0 5 a C o m p a r e d w it h t h e r e m a in d e r o f

a n a ly z e d s tu d ie s ( ie , 4 2 - N ) u n le s s

o th e r w is e n o te d . in v o lv e d > 5 m e a n in g f u l p a t ie n t in t e r a c t io n s ( 1 3 ) c

0 . 7 7 ( 0 . 6 4 - 0 . 9 2 ) 0 . 8 4 ( 0 . 7 3 - 0 . 9 6 ) .4 3

C o m p ris e d > 5 u n iq u e a c t iv it ie s ( 1 6 ) c 0 .6 3 ( 0 . 5 3 - 0 . 7 6 ) 0 .9 1 ( 0 . 8 1 - 1 . 0 1 ) .0 0 1 b C o m p a r e d w it h " n o c h a n g e ”

( n = 1 8).

c C u t o f fs c h o s e n b e c a u s e t h e y H ad b o th a n in p a t ie n t a n d o u t p a t ie n t c o m p o n e n t ( 2 2 )

0 .7 8 ( 0 . 6 5 - 0 . 9 2 ) 0 . 8 4 ( 0 . 7 4 - 0 . 9 7 ) .4 6

S tu d y p u b lis h e d 2 0 0 2 o r la t e r ( 3 3 ) d 0 .8 9 ( 0 . 8 1 - 0 . 9 7 ) 0 . 5 6 ( 0 . 4 0 - 0 . 7 9 ) .0 1 r e p r e s e n te d t h e 7 5 t h p e r c e n tile o f

O u tc o m e c h a r a c te r is tic s

O u tc o m e m e a s u re d w a s u n p la n n e d r e a d m is s io n s ( 9 )

0 . 8 4 ( 0 . 6 9 - 1 . 0 2 ) 0 . 8 0 ( 0 . 7 0 - 0 . 9 1 ) .7 0 r e p r e s e n te d t h e m i d - p o in t o f s tu d y

e lig ib ilit y f o r t h is r e v ie w .

T a b le 4 . E f f e c t s o f C o m p r e h e n s i v e S u p p o r t in M e t a r e g r e s s i o n A n a ly s i s

S tu d y C h a r a c te r is tic S tu d ie s , N o. R e a d m is s io n , R e la tiv e R isk ( 9 5 % C l)a P V a lu e

C o m p re h e n s iv e s u p p o r t c a te g o r y 5

1 ( 0 p o in ts ) 1 5 1 [R e fe r e n c e ]

2 (1 o r 2 p o in ts ) 2 0 0 .8 2 ( 0 . 6 6 - 1 . 0 2 ) .0 7

3 (3 o r 4 p o in ts ) 7 0 .6 3 ( 0 . 4 3 - 0 . 9 1 ) .0 2

P u b lic a tio n in 2 0 0 2 o r a fte r 3 3 1 .4 7 ( 1 . 1 0 - 1 . 9 6 ) .0 1

a T h is r e p r e s e n ts t h e a d ju s te d e f f e c t o f e a c h c h a r a c te r is tic o n e a r ly r e a d m is s io n t h a t (1) w e r e r a te d t o in c re a s e p a t ie n t c a p a c ity , ( 2 ) h a d > 5 u n iq u e in t e r v e n t io n

in m e ta r e g r e s s io n . a c tiv it ie s , (3 ) h a d s 5 m e a n in g fu l p a t ie n t in t e r a c t io n s , a n d ( 4 ) h a d > 2

b T h e c o m p r e h e n s iv e s u p p o r t v a r ia b le r e tu r n e d 1 p o in t e a c h f o r in t e r v e n tio n s in d iv id u a ls in v o lv e d in its d e liv e ry .

effects would be based on patient-reported assessm ents o f in ­ te rv e n tio n w o rk lo ad . In d e e d , m an y eligible p a tie n ts d e ­ clined en ro llm en t in to som e s tu d ie s , 2 3 , 2 8 ,4 4 , 5 0 ,5 3 o ften b e ­ cause th ey did not w ish to take on th e perceived burden o f the intervention; evaluating th e effect o f intervention-im posed w orkload in such sam ples is o f lim ited applicability. In gen­ eral, th e se assessm en ts should be regarded as h y p o th e sis­ generating and th e inferences m ade on th e basis o f subgroup analyses m u st be view ed as tentative (given th e potential for chance findings from testing multiple hypotheses and the pos­ sibility th a t some variables are correlated). Finally, despite ro ­ b u st efforts to obtain unpublished data, there was evidence o f publication bias. The overall effect o f this on our findings is n o t known.

This review also has m any strengths. First, it provides, to our knowledge, th e largest a n d m ost com prehensive assess­ m ent o f discharge interventions and their effect on 30-day re­ adm issions, including 47 random ized trials at low risk o f bias. This is a stronger and less heterogeneous body o f evidence than previously assem bled , 11,65 and it includes u npublished data from 18 trials. Our study used an activity-based coding m ethod designed to en su re appropriate characterization o f each in ­ te rv en tio n and th e n et difference in activity betw een in te r­

v en tio n and control arm s. This m e th o d co n trib u tes to th e field an d can be applied to fu tu re assessm en ts o f com plex interventions. To our knowledge, this is also th e first use of th e CuCoM5 to analyze th e im pact o f health care delivery in ­ terv en tio n s on p atien ts as an explanation for th e ir relative efficacy.

C o m p a r is o n W i t h O t h e r S t u d ie s

We identified 31 more random ized clinical trials th a n were accu m u lated in th e m o st recen t review o f discharge in te r­ ven tio n effects on 30-day readm ission ra te s , 11 an d w e p ro ­ vide th e first m eta-analysis on th is topic. Although previous stu d ies an d review s have suggested th a t “b u n d le d ” in te r­ v en tio n s are o f g rea ter v a lu e , 11,65 th is m e ta-an a ly sis p ro ­ vides objective support for this claim. In addition, our study ad d s to an d en h an ces th e body o f evidence rela ted to th e im portance o f p atien t contextual factors in affecting health outcom es. 6 5

Im p lic a t io n s f o r P o lic y a n d P r a c t ic e

In this analysis, interventions th a t used a com plex and su p ­ portive strategy to assess and address contextual issues and lim itations in patient capacity w ere m ost effective at reduc-

1 1 0 4 J A M A I n t e r n a l M e d ic in e J u ly 2 0 1 4 V o lu m e 174, N u m b e r 7 ja m a in t e r n a lm e d ic in e .c o m

Preventing 30-Day Hospital Readmissions Original Investigation Research

ing early hospital readm issions. Many o f these contacted th e p atien t frequently, used hom e visits, and reported cost sav­ ings. This inform ation can be used to guide the design and te st­ ing o f fu tu re interventions. The CuCoM may also have value in helping to conceptualize th e effects o f health care in terv en ­ tions across diverse patient contexts, b u t we w ere unable to characterize a co n sisten t effect o f rated in terv en tio n w ork­ load on outcom es. Finally, we found th a t more recently tested interventions were less effective. We hypothesize th at this may rep rese n t (l) a general im provem ent over tim e in th e s ta n ­ dard o f care th a t was no t fully appreciated in control descrip­ tions, (2) an increased effort over tim e to test sim pler and less comprehensive interventions, (3) a higher likelihood over tim e o f more diverse interventions to m easure and report 30-day readm ission rates (eg, including th o se less focused on red u c­ ing early readm issions), and/or (4) a general shift away from interventions stressing hum an interaction tow ard those more

high tech in nature. Additional stu d y is need ed to d eterm ine th e im plications o f this finding.

Conclusions

Our results suggest th a t m ost interventions tested are effec­ tiv e in red u cin g th e risk o f early read m issio n s. Some fe a ­ tures, however, m ay enhance th e effect o f these programs. In particular, we found value in interventions th a t supported p a­ tie n ts’ capacity for self-care in their transition from hospital to hom e. F uture work in ten d ed to improve th e effectiveness o f health care delivery may benefit from consideration o f the dem ands th a t h ealth care interventions place on recently dis­ charged patients and th eir caregivers and th e extent to w hich these dem ands are offset by comprehensive support for im ple­ m entation.

ARTICLE INFORMATION

Accepted for Publication: March 8,2014.

Published Online: May 12,2014. doi:10.1001/jamainternmed.2014.1608.

Author Affiliations: Knowledge and Evaluation Research Unit, Mayo Clinic, Rochester, Minnesota (Leppin, Gionfriddo, Kessler, Brito, Wang, Boehmer, Ting, Murad, M ontori); Mayo Graduate School. Mayo Clinic, Rochester, Minnesota (Gionfriddo); Departm ent o f Medicine, Mayo Clinic, Rochester, Minnesota (Kessler, Brito, M ontori); Mayo Clinic Center fo r the Science o f Healthcare Delivery, Mayo Clinic, Rochester, Minnesota (Brito, Wang, Murad, M ontori); General Practice and Primary Care, Institute o f Health and Wellbeing, University o f Glasgow, Glasgow, Scotland, United Kingdom (Mair, Gallacher); Mayo Clinic Libraries, Mayo Clinic, Rochester, Minnesota (Erwin); medical student at St Louis University School o f Medicine, St Louis, Missouri (Sylvester); graduate student at University o f Minnesota School o f Public Health, Minneapolis (Boehmer); Division o f Health Policy and Management, School o f Public Health, University o f Minnesota. Minneapolis (Shippee).

Author Contributions: Drs Leppin and M ontori had full access to all o f th e data in the study and take responsibility fo r th e integrity o f the data and the accuracy o f th e data analysis. Study concept and design: Leppin, Gionfriddo, Mair, Gallacher, Erwin, Murad, Shippee, M ontori. Acquisition, analysis, o r interpretation o f data: Leppin, Gionfriddo, Kessler, Brito, Mair, Gallacher, Wang, Sylvester, Boehmer, Ting, Murad, M ontori. Drafting o f the manuscript: Leppin, Mair, Gallacher, Boehmer, Murad, Montori. Critical revision o f the manuscript fo r im portant intellectual content: All authors. Statistical analysis: Wang, Murad, Montori. Administrative, technical, or m aterial support: Leppin, Kessler, Brito, Mair, Gallacher, Erwin, Sylvester, Boehmer, M ontori. Study supervision: Leppin, M ontori.

Conflict o f Interest Disclosures: None reported.

Funding/Support: This publication was made possible by Clinical and Translational Science Award grant UL1TR000135 from th e National Center for Advancing Translational Sciences, a com ponent o f th e National Institutes o f Health.

Role o f the Sponsors: The funding source had no role in the design and conduct o f th e study; collection, management, analysis, and interpretation o f the data; preparation, review, or approval o f the manuscript; and decision to submit the manuscript fo r publication.

Disclaimer: The contents are solely the responsibility o f the authors and do n ot necessarily represent the official view o f the National Institutes o f Health.

Additional Contributions: The follow ing individuals provided unpublished data, conducted secondary analyses, assisted w ith study identification, and/or provided guidance and support: Agneta Bjorck Linne, MS, PhD, and Hans Liedholm, MD, PhD (Malmo University Hospital, Sweden); Marcia E. Leventhal, RN, MSN, Sabina De Geest, PhD. RN. and Kris Denhaerynck, PhD, RN (Institute o f Nursing Science, University o f Basel, Switzerland); Lars Rytter, MD (Glostrup University Hospital, Denmark); Gillian A. Whalley, PhD (University o f Auckland, New Zealand); David Maslove, MD, FRCPC (University o f Toronto, Canada); Judith Garcia-Aymerich, MD, PhD (Universitat Pomeu Fabra-Barcelona, Spain); Bonnie J. Wakefield, PhD, RN (Iowa City Veterans Affairs Healthcare System); Kathleen Finn, MD (D epartm ent o f Medicine, Massachusetts General Hospital, Boston); Jon C. Tilburt, MD, MPH (Mayo Clinic); Christiane E. Angermann, MD (Universitatsklinikum Wurzburg, Denmark); Felipe Atienza, MD, PhD (Hospital General Universitario Gregorio Maranon-Madrid, Spain); Dan Gronseth, BS (Mayo Clinic); Michael W. Rich, MD (Washington University, St Louis); A ndrew Masica, MD, MSCI (Baylor Health Care System); Karen B. Hirschman, PhD, and Mary D. Naylor, PhD (University o f Pennsylvania School o f Nursing); James F. Graumlich, MD (University o f Illinois College o f Medicine at Peoria); Anna Stromberg, RN, PhD (Linkoping University Hospital, Sweden). These contributors were not compensated fo r th e ir contributions.

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