| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
2.8%
|
| 2 | Every few weeks | 62 |
25%
|
| 3 | Every few months | 130 |
52.4%
|
| 4 | Not at all | 49 |
19.8%
|
| Sysmiss | 46 |