| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 17 |
7.9%
|
| 2 | Every few weeks | 36 |
16.8%
|
| 3 | Every few months | 112 |
52.3%
|
| 4 | Not at all | 49 |
22.9%
|
| Sysmiss | 39 |