| Value | Category | Cases | |
|---|---|---|---|
| 1 | During the past month I did not smoke pipe with tobacco. | 4508 |
96.1%
|
| 2 | Less than once a week. | 119 |
2.5%
|
| 3 | At least once a week but not every day. | 50 |
1.1%
|
| 4 | Every day. | 14 |
0.3%
|
| Sysmiss | 137 |