months fail     trt 
 1      2    1 control
 2      3    1 control
 3      4    1 control
 4      7    1 control
 5     10    1 control
 6     22    1 control
 7     28    1 control
 8     29    1 control
 9     32    1 control
10     37    1 control
11     40    1 control
12     41    1 control
13     54    1 control
14     61    1 control
15     63    1 control
16     71    1 control
17    127    0 control
18    140    0 control
19    146    0 control
20    158    0 control
21    167    0 control
22    182    0 control
23      2    1    pred
24      6    1    pred
25     12    1    pred
26     54    1    pred
27     56    0    pred
28     68    1    pred
29     89    1    pred
30     96    1    pred
31     96    1    pred
32    125    0    pred
33    128    0    pred
34    131    0    pred
35    140    0    pred
36    141    0    pred
37    143    1    pred
38    145    0    pred
39    146    1    pred
40    148    0    pred
41    162    0    pred
42    168    1    pred
43    173    0    pred
44    181    0    pred