| Value | Category | Cases | |
|---|---|---|---|
| 1 | During the past month I did not smoke pipe with tobacco. | 15381 |
98%
|
| 2 | Less than once a week. | 143 |
0.9%
|
| 3 | At least once a week but not every day. | 98 |
0.6%
|
| 4 | Every day. | 68 |
0.4%
|
| Sysmiss | 267 |