Statistics (using R-studio)

Diabetes Dataset These data are courtesy of Dr John Schorling, Department of Medicine, University of Virginia School of

Medicine.

The data consist of 19 variables on 403 subjects from 1046 subjects who were interviewed in a

study to understand the prevalence of obesity, diabetes, and other cardiovascular risk factors in

central Virginia for African Americans. According to Dr John Hong, Diabetes Mellitus Type II

(adult onset diabetes) is associated most strongly with obesity. The waist/hip ratio may be a

predictor in diabetes and heart disease. DM II is also agssociated with hypertension - they may

both be part of "Syndrome X". The 403 subjects were the ones who were actually screened for

diabetes. Glycosolated hemoglobin > 7.0 is usually taken as a positive diagnosis of diabetes. For

more information about this study see

Willems JP, Saunders JT, DE Hunt, JB Schorling: Prevalence of coronary heart disease risk

factors among rural blacks: A community-based study. Southern Medical Journal 90:814-820;

1997

and

Schorling JB, Roach J, Siegel M, Baturka N, Hunt DE, Guterbock TM, Stewart HL: A trial of

church-based smoking cessation interventions for rural African Americans. Preventive Medicine

26:92-101; 1997.

Information from:

http://biostat.mc.vanderbilt.edu/wiki/pub/Main/DataSets/diabetes.html

Data frame:diabetes

403 observations and 19 variables, maximum # NAs:262

Name Labels Units Levels Storage NAs

id Subject ID

double 0

chol Total Cholesterol

double 1

stab.glu Stabilized Glucose

double 0

hdl High Density Lipoprotein

double 1

ratio Cholesterol/HDL Ratio

double 1

glyhb Glycosolated Hemoglobin

double 13

location

2

integer 0

age

years

double 0

gender

2

integer 0

height

inches

double 5

weight

pounds

double 1

frame

3

integer 12

bp.1s First Systolic Blood Pressure

double 5

bp.1d First Diastolic Blood Pressure

double 5

bp.2s Second Systolic Blood Pressure

double 262

bp.2d Second Diastolic Blood Pressure

double 262

waist

inches

double 2

hip

inches

double 2

time.ppn Postprandial Time when Labs were Drawn minutes

double 3

Variable Levels

location Buckingham

Louisa

gender male

female

frame small

medium

large