epidemiology lab 3

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LAB3-individualcopyTEMPLATE.docx

NAME:

LAB: MORBIDITY & MORTALITY INDIVIDUAL ASSIGNMENT

DIRECTIONS:

This assignment is to be done alone with you as the sole author. Any work that appears to have been done in groups or with a partner will receive a zero.

QUESTIONS:

1) Use the data on all-cause mortality and unintentional injury deaths in Table 1. For each of the following questions write out the full formula you are using, then perform the necessary calculations to get an answer. Show your work in order to get full credit or to get partial credit in the case of an incorrect answer.

a) (4 points) What is the sex ratio of males per 1,000 females (use the total population counts)?

b) (4 points) What was the sex specific mortality rate (per 100k) for females in 2002?

( HAPP 420 )

( 1 )

c) (4 points) What was the age-specific mortality rate (per 100k) for all causes for females in the age group 0-4 in 2002?

d) (4 points) What was the unintentional-injury-specific mortality rate (per 100k) for females in 2002?

e) (4 points) What was the proportional mortality rate for unintentional injury (in %) for females in 2002?

f) (8 points) What is the age-specific mortality rate for unintentional injury (per 100k) for females in 2002 for the ages 15-24 and also for ages 65+?

g) (4 points) In the group portion of this lab, you should have calculated the sex-specific mortality rate for males to be 846.6 per 100,000 males. Compare this answer to 1b) above. Which is higher? Why might these two numbers be misleading in the same way that crude mortality rates are?

HAPP 420

Table 1

All Races, Both_sexes

All Races, Males

All Races, Females

Age group

(years)

All_causes

Unintentional

Injuries

Estimated

Pop.

All_causes

Unintentional

Injuries

Estimated

Pop.

All_causes

Unintentional

Injuries

Estimated

Pop.

0–4

32,892

2,587

19,597,000

18,523

1,577

10,020,000

14,369

1,010

9,577,000

5–14

7,150

2,718

41,037,000

4,198

1713

21,013,000

2,952

1005

20,024,000

15–24

33,046

15,412

40,590,000

24,416

11,438

20,821,000

8,630

3,974

19,769,000

25–34

41,355

12,569

39,928,000

28,736

9,635

20,203,000

12,619

2,934

19,725,000

35–44

91,140

16,710

44,917,000

57,593

12,012

22,367,000

33,547

4,698

22,550,000

45–54

172,385

14,675

40,084,000

107,722

10,492

19,676,000

64,663

4,183

20,408,000

55–64

253,342

8,345

26,602,000

151,363

5,781

12,784,000

101,979

2,564

13,818,000

65+

1,811,720

33,641

35,602,000

806,431

16,535

14,772,000

1,005,289

17,106

20,830,000

Not stated

357

85

0

282

74

0

75

11

0

Total

2,443,387

106,742

288,357,000

1,199,264

69,257

141,656,000

1,244,123

37,485

146,701,000

Data Source: Web-based Injury Statistics Query and Reporting System (WISQARS) [online database] Atlanta; National Center for Injury Prevention and Control. Available from: http://www.cdc.gov/injury/wisqars .

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2) Graph 1 shows the age-specific mortality rates for unintentional injuries among males and females. Use it to answer the questions that follow. Be as specific as possible to get full credit.

( Age-Specific Mortality Rates for Unintentional Injuries by Sex 120.0 100.0 80.0 60.0 Males Females 40.0 20.0 0.0 0–4 5–14 15–24 25–34 35–44 45–54 55–64 65+ Age Groups )Graph 1

( Deaths due to unintentional injury per 100K )Data Source: Web-based Injury Statistics Query and Reporting System (WISQARS) [online database] Atlanta; National Center for Injury Prevention and Control. Available from: http://www.cdc.gov/injury/wisqars .

a) (4 points) Describe how the mortality due to unintentional injuries changes with age for females.

( HAPP 420 )

( 4 )

b) (4 points) How does female age-specific mortality due to unintentional injuries compare to that of males?

c) (4 points) What are some possible reasons for these differences based on sex?