| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 52 |
10.7%
|
| 2 | Every few weeks | 94 |
19.3%
|
| 3 | Every few months | 233 |
47.8%
|
| 4 | Not at all | 108 |
22.2%
|
| Sysmiss | 18 |