| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
4.3%
|
| 2 | Every few weeks | 49 |
20.9%
|
| 3 | Every few months | 102 |
43.6%
|
| 4 | Not at all | 73 |
31.2%
|
| Sysmiss | 98 |