| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
3.9%
|
| 2 | Every few weeks | 15 |
11.7%
|
| 3 | Every few months | 68 |
53.1%
|
| 4 | Not at all | 40 |
31.3%
|
| -99 | 3 | ||
| Sysmiss | 28 |