| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
2.5%
|
| 2 | Every few weeks | 9 |
4.6%
|
| 3 | Every few months | 47 |
23.9%
|
| 4 | Not at all | 136 |
69%
|
| Sysmiss | 13 |