| Value | Category | Cases | |
|---|---|---|---|
| 1 | During the past month I did not smoke pipe with tobacco. | 4468 |
95.6%
|
| 2 | Less than once a week. | 143 |
3.1%
|
| 3 | At least once a week but not every day. | 41 |
0.9%
|
| 4 | Every day. | 21 |
0.4%
|
| Sysmiss | 30 |