reti {ordDisp}

Example Retinopathy

Description

The data set contains information about persons with retinopathy. In the 6-year followup study on diabetes and retinopathy status the interesting question is how the retinopathy status is associated wie several risk factors.

Usage

data(reti)

Format

A data frame containing 613 observations on 5 variables:

RET retinopathy status (1:no retinopathy, 2:nonproliferative retinopathy, 3:advanced retinopathy or blind)

SM smoker (1:yes, 0:no)

DIAB diabetes duration in years

GH glycosylated hemoglobin measured in percent

BP diastolic blood pressure in mmHg

References

Bender and Grouven (1998): Using binary logistic regression models for ordinal data with nonproportional odds, J. Clin. Epidemiol., 51, 809-816.

Examples

data(reti)
table(reti$RET)