| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
4.4%
|
| 2 | Every few weeks | 45 |
16.7%
|
| 3 | Every few months | 105 |
38.9%
|
| 4 | Not at all | 108 |
40%
|
| Sysmiss | 49 |