| ovarian {survival} | R Documentation | 
Survival in a randomised trial comparing two treatments for ovarian cancer (? from an Eastern Cooperative Oncology Group study)
ovarian
| futime: | survival or censoring time | 
| fustat: | censoring status | 
| age: | in years | 
| resid.ds: | residual disease present (1=no,2=yes) | 
| rx: | treatment group | 
| ecog.ps: | ECOG performance status (1 is better, see reference) | 
Terry Therneau
for ECOG performance status: http://ecog.dfci.harvard.edu/~ecogdba/general/perf_stat.html