| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
8.3%
|
| 2 | Every few weeks | 21 |
17.5%
|
| 3 | Every few months | 58 |
48.3%
|
| 4 | Not at all | 31 |
25.8%
|
| Sysmiss | 27 |