| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
3.4%
|
| 2 | Every few weeks | 46 |
19.5%
|
| 3 | Every few months | 134 |
56.8%
|
| 4 | Not at all | 48 |
20.3%
|
| Sysmiss | 53 |