Data on 34 HIV-infected patients
See Problem 7.8.6
Data can be read in free format. The variables represented in the dataset are as follows: 

Drug combination (1=AZT + zalcitabine, 2=AZT + zalcitabine + saquinavir) 
Time after drug administration to CD4 count at a specified level, days 
Indicator of CD4 count reaching specified level (1=yes, 0=no) 
THE DATA 
1 85 1
1 32 1
1 38 0
1 45 1
1 4 0
1 84 1
1 49 1
1 180 0
1 87 1
1 75 1
1 102 1
1 39 1
1 12 1
1 11 1
1 80 1
1 35 1
1 6 1
2 22 1
2 2 1
2 48 1
2 85 1
2 160 1
2 238 1
2 56 0
2 94 0
2 51 0
2 12 1
2 171 1
2 80 1
2 180 1
2 4 1
2 90 1
2 180 0
2 3 1