| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
3.8%
|
| 2 | Every few weeks | 15 |
14.4%
|
| 3 | Every few months | 58 |
55.8%
|
| 4 | Not at all | 27 |
26%
|
| Sysmiss | 25 |