| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
4.5%
|
| 2 | Every few weeks | 11 |
7%
|
| 3 | Every few months | 50 |
31.8%
|
| 4 | Not at all | 89 |
56.7%
|
| Sysmiss | 43 |