| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 27 |
7.3%
|
| 2 | Every few weeks | 52 |
14%
|
| 3 | Every few months | 94 |
25.3%
|
| 4 | Not at all | 198 |
53.4%
|
| Sysmiss | 50 |