| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 17 |
7.4%
|
| 2 | Every few weeks | 43 |
18.8%
|
| 3 | Every few months | 73 |
31.9%
|
| 4 | Not at all | 96 |
41.9%
|
| -99 | 3 | ||
| Sysmiss | 28 |