| rat2 {icrf} | R Documentation |
Rat tumor data
Description
This is the ‘Rat tumor data’ data from Dinse and Lagakos (1984). 112 female and 207 male rats. This data can be considered as a current status data where the time (T) from birth to the onset of the tumor is the main variable of interest but is never observed, but can only be guessed by the set of the death time (survtime) and the tumor indicator (tumor). Quotes are from Dinse and Lagakos (1984).
Usage
data(rat2)
Format
A data frame with 319 rows and 6 variables:
- dose.lvl
'dose level of PBB (coded 0-5).'
- weight
'initial weight in grams.'
- cage.no
'number of the cage tier.'
- survtime
'survival time (age) in weeks.'
- tumor
'response indicator (1 = hyperplasia present, 0 = hyperplasia absent).'
- male
The gender (0 = female, 1 = male).
References
Dinse, G. E., & Lagakos, S. W. (1983). Regression analysis of tumour prevalence data. Journal of the Royal Statistical Society: Series C (Applied Statistics), 32(3), 236-248.
Dinse, G. E., & Lagakos, S. W. (1984). Correction: Regression analysis of tumour prevalence data. Journal of the Royal Statistical Society: Series C (Applied Statistics), 33(1), 79-80.