| Value | Category | Cases | |
|---|---|---|---|
| 1 | During the past month I did not smoke pipe with tobacco. | 3858 |
97.2%
|
| 2 | Less than once a week. | 69 |
1.7%
|
| 3 | At least once a week but not every day. | 32 |
0.8%
|
| 4 | Every day. | 9 |
0.2%
|
| Sysmiss | 52 |