Description Usage Format References
The original data consist of 223 people enrolled in the study between November 1986 and February 1989 from 51 zip codes in the southeastern corner of Minnesota in the United States (Banerjee and Carlin, 2004). In this study, smokers were randomly assigned to one of two treatment groups: smoking intervention (SI) group or usual care (UC) group. The survival time is defined as the time (in years) required for a failed quitter to resume smoking. The people residing in the area with the same zip code form a cluster and may be spatially correlated due to the shared environment.
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Observed covariates include
SexF
0 = male, 1 = female.
Duration
duration as smoker in years.
SI.UC
intervention type: 1 = smoking intervention (SI), 0 = usual care (UC).
F10Cigs
the average number of cigarettes smoked per day over the last 10 years (rounded).
Relapse
1 = relapse, 0 = no relapse.
Timept1
the time of study entry.
Timept2
the time of resume smoking.
Zip
51 zip codes in the southeastern corner of Minnesota.
Banerjee, S. and Carlin, B. P. (2004) Parametric spatial cure rate models for interval-censored time-to-relapse data. Biometrics, 60: 268-275.
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