Data on tumor recurrence for patients with bladder cancer.


Source: Table 2 (page 1067) of Wei, Lin and Weissfeld (1989). 
Reproduced with permission of the American Statistical Association.

Reference: Wei, L.J., Lin, D.Y. and Weissfeld, L. (1989). 
Regression analysis of multivariate incomplete failure time data by modeling 
marginal distribution. Journal of the American Statistical Association, 
84, 1065-1071.


Description:

The data are from an experimental study of patients with bladder
cancer conducted by the Veterans Administration Cooperative Urological 
Research Group. In this study patients underwent surgery to remove
tumors. Following surgery, patients were randomized to either
placebo or treatment with thiotepa. Subsequently patients were
examined at 18, 24, 30 and 36 months. The dataset contains information
for the month 18 follow-up visit only. The response variable is binary, 
indicating whether or not there is a new tumor (Y=1, if new tumor; 
Y=0, if no new tumor) at the 18 month visit. The categorical variable 
Treatment is coded 1=thiotepa, 0=placebo.


Variable List:

Subject ID, Treatment (0=Placebo, 1=Thiotepa), 
Tumor Recurrence (1=New tumors, O=No New Tumors).


                     1        0          1  
                     2        0          1  
                     3        0          1  
                     4        0          0  
                     5        0          1  
                     6        0          1  
                     7        0          0  
                     8        0          0  
                     9        0          1  
                    10        0          0  
                    11        0          0  
                    12        0          0  
                    13        0          0  
                    14        0          0  
                    15        0          1  
                    16        0          1  
                    17        0          0  
                    18        0          0  
                    19        0          0  
                    20        0          0  
                    21        0          0  
                    22        0          1  
                    23        0          0  
                    24        0          1  
                    25        0          0  
                    26        0          0  
                    27        0          0  
                    28        0          0  
                    29        0          0  
                    30        0          0  
                    31        0          0  
                    32        0          0  
                    33        0          1  
                    34        0          1  
                    35        0          0  
                    36        0          1  
                    37        0          0  
                    38        0          0  
                    39        0          1  
                    40        0          0  
                    41        0          0  
                    42        0          0  
                    48        1          0  
                    49        1          0  
                    50        1          0  
                    51        1          0  
                    52        1          0  
                    53        1          0  
                    54        1          0  
                    55        1          0  
                    56        1          0  
                    57        1          0  
                    58        1          0  
                    59        1          0  
                    60        1          0  
                    61        1          0  
                    62        1          0  
                    63        1          1  
                    64        1          0  
                    65        1          0  
                    66        1          0  
                    67        1          0  
                    68        1          0  
                    69        1          1  
                    70        1          0  
                    71        1          0  
                    72        1          0  
                    73        1          0  
                    74        1          1  
                    75        1          0  
                    76        1          1  
                    77        1          0  
                    78        1          0  
                    79        1          0  
                    80        1          0