| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
7.2%
|
| 2 | Every few weeks | 48 |
28.9%
|
| 3 | Every few months | 79 |
47.6%
|
| 4 | Not at all | 27 |
16.3%
|
| -99 | 6 | ||
| Sysmiss | 32 |