| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 19 |
5.3%
|
| 2 | Every few weeks | 71 |
19.7%
|
| 3 | Every few months | 183 |
50.8%
|
| 4 | Not at all | 87 |
24.2%
|
| Sysmiss | 80 |