| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
2.4%
|
| 2 | Every few weeks | 48 |
22.6%
|
| 3 | Every few months | 109 |
51.4%
|
| 4 | Not at all | 50 |
23.6%
|
| Sysmiss | 41 |