| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
10.4%
|
| 2 | Every few weeks | 21 |
18.3%
|
| 3 | Every few months | 37 |
32.2%
|
| 4 | Not at all | 45 |
39.1%
|
| Sysmiss | 19 |