| Value | Category | Cases | |
|---|---|---|---|
| 1 | During the past month I did not smoke pipe with tobacco. | 7478 |
98%
|
| 2 | Less than once a week. | 93 |
1.2%
|
| 3 | At least once a week but not every day. | 33 |
0.4%
|
| 4 | Every day. | 28 |
0.4%
|
| Sysmiss | 95 |