Data on 50 litters of rats (3 rats per litter)

      See Problem 7.8.13

Data can be read in free format. The variables represented in the
dataset are as follows:

Time to tumor development
Indicator of tumor development (1=yes, 0=no)
Treatment (1=treated with drug, 0=given placebo)
Litter

Reference Mantel et al. /Cancer Research / 37 (1977): 3863-3868.

*THE DATA*

101 0 1 1
104 0 1 2
104 0 1 3
77 0 1 4
89 0 1 5
88 1 1 6
104 1 1 7
96 1 1 8
82 0 1 9
70 1 1 10
89 1 1 11 
91 0 1 12
39 1 1 13
103 1 1 14
93 0 1 15
85 0 1 16
104 0 1 17
104 0 1 18
81 0 1 19
67 1 1 20
104 0 1 21
104 0 1 22
104 0 1 23
87 0 1 24
104 0 1 25
89 0 1 26
78 0 1 27
104 0 1 28
86 1 1 29
34 1 1 30
76 0 1 31
103 1 1 32
102 1 1 33
80 1 1 34
45 1 1 35
94 1 1 36
104 0 1 37
104 0 1 38
76 0 1 39
80 1 1 40
72 1 1 41
73 1 1 42
92 1 1 43
104 0 1 44
55 0 1 45
49 0 1 46
89 1 1 47
88 0 1 48
103 1 1 49
104 0 1 50
104 0 0 1
104 0 0 2
104 0 0 3
97 0 0 4
104 0 0 5
104 0 0 6
94 0 0 7
104 0 0 8
104 0 0 9
104 0 0 10
91 0 0 11
92 0 0 12
50 1 0 13
91 0 0 14
104 0 0 15
104 0 0 16
104 0 0 17
104 0 0 18
104 0 0 19
104 0 0 20
104 0 0 21
104 0 0 22
83 0 0 23
104 0 0 24
104 0 0 25
104 0 0 26
104 0 0 27
81 1 0 28
94 0 0 29
104 0 0 30
87 0 0 31
84 1 0 32
104 0 0 33
104 0 0 34
104 0 0 35
104 0 0 36
104 0 0 37
101 1 0 38
84 1 0 39
80 1 0 40
104 0 0 41
104 0 0 42
104 0 0 43
98 0 0 44
104 0 0 45
83 0 0 46
104 0 0 47
99 0 0 48
104 0 0 49
104 0 0 50
49 1 0 1
102 0 0 2
104 0 0 3
79 0 0 4
104 0 0 5
96 1 0 6
77 1 0 7
104 0 0 8
77 0 0 9
77 0 0 10
90 0 0 11
70 0 0 12
45 0 0 13
69 0 0 14
103 0 0 15
72 0 0 16
63 0 0 17
74 0 0 18
69 0 0 19
68 1 0 20
104 0 0 21
104 0 0 22
40 1 0 23
104 0 0 24
104 0 0 25
104 0 0 26
104 0 0 27
64 1 0 28
55 1 0 29
54 1 0 30
74 0 0 31
73 1 0 32
80 0 0 33
73 0 0 34
79 0 0 35
104 0 0 36
104 0 0 37
94 0 0 38
78 1 0 39
76 0 0 40
95 0 0 41
66 1 0 42
102 1 0 43
78 0 0 44
104 0 0 45
77 0 0 46
104 0 0 47
79 0 0 48
91 0 0 49
79 1 0 50