Epi (version 2.56)

DMconv: Conversion to diabetes

Description

Data from a randomized intervention study ("Addition") where persons with prediabetic conditions are followed up for conversion to diabetes (DM). Conversion dates are interval censored. Original data are not published yet, so id-numbers have been changed and all dates have been randomly perturbed.

Usage

data(DMconv)

Format

A data frame with 1519 observations on the following 6 variables.

id

Person identifier

doe

Date of entry, i.e. first visit.

dlw

Date last seen well, i.e. last visit without DM.

dfi

Date first seen ill, i.e. first visit with DM.

gtol

Glucose tolerance. Factor with levels: 1="IFG" (impaired fasting glucose), 2="IGT" (impaired glucose tolerance).

grp

Randomization. Factor with levels: 1="Intervention", 2="Control".

Examples

data(DMconv)
str(DMconv)
head(DMconv)