| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
2.9%
|
| 2 | Every few weeks | 36 |
14.9%
|
| 3 | Every few months | 105 |
43.4%
|
| 4 | Not at all | 94 |
38.8%
|
| Sysmiss | 52 |