A data.frame with $90$ rows (observations) and $3$ columns (variables).
Source
Klein J, Moeschberger. Survival Analysis, 2nd edition. Springer 2003.
Example 7.9, pg 224.
Details
Data from a trial of locally unresectable gastic cancer.
Patients ($n=45$ in each group) were randomized to one of two groups:
chemotheapy vs. chemotherapy + radiotherapy.
Columns are:
time
Time, in days
event
Death
group
Treatment
0
chemotherapy
1
chemotherapy + radiotherapy
References
Gastrointestinal Tumor Study Group, 1982.
A comparison of combination chemotherapy and
combined modality therapy for locally advanced gastric carcinoma.
Cancer. 49(9):1771-7.
Wiley (free).
Stablein DM, Koutrouvelis IA, 1985.
A two-sample test sensitive to crossing hazards in uncensored and singly censored data.
Biometrics. 41(3):643-52.
JSTOR.