cancer.rats: Rats data for frailty modeling
Description
50 litters of rats were exposed to a carcinogen and observed for time
to tumor occurrence.format
ll{
litter
Number
rx
Exposure indicator (Carcinogen = 1, Control = 0)
time
Tumor occurrence (Days)
event
Indicator if tumor observed (1 = event, 0 =
censored)
}References
Mantel, N., Bohidar, N. R., and Ciminera, J. L. (1977), "Mantel-Haenszel analyses
of litter-matched time-to-response data, with modifications for recovery of
interlitter information," Cancer Research, 37, 3863-8.