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.
A data frame with 1519 observations on the following 6 variables.
Date of entry, i.e. first visit.
Date last seen well, i.e. last visit without DM.
Date first seen ill, i.e. first visit with DM.
Glucose tolerance. Factor with levels: 1="IFG" (impaired fasting glucose), 2="IGT" (impaired glucose tolerance).
Randomization. Factor with levels: 1="Intervention", 2="Control".
Signe Saetre Rasmussen, Steno Diabetes Center. The Addition Study.
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