| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 16 |
5.8%
|
| 2 | Every few weeks | 67 |
24.3%
|
| 3 | Every few months | 112 |
40.6%
|
| 4 | Not at all | 81 |
29.3%
|
| Sysmiss | 31 |