| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
3.6%
|
| 2 | Every few weeks | 11 |
6.6%
|
| 3 | Every few months | 39 |
23.5%
|
| 4 | Not at all | 97 |
58.4%
|
| -99 | 13 |
7.8%
|
|
| Sysmiss | 25 |