| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoke tobacco in pipe | 4240 |
96.9%
|
| 2 | At present, I am a pipe ex-smoker | 77 |
1.8%
|
| 3 | At present, I smoke tobacco in pipe occasionally ( not daily) | 38 |
0.9%
|
| 4 | At present, I smoke tobacco in pipe daily | 20 |
0.5%
|
| Sysmiss | 156 |