| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
6.3%
|
| 2 | Every few weeks | 18 |
14.1%
|
| 3 | Every few months | 53 |
41.4%
|
| 4 | Not at all | 49 |
38.3%
|
| Sysmiss | 13 |