| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
3.7%
|
| 2 | Every few weeks | 27 |
12.6%
|
| 3 | Every few months | 90 |
42.1%
|
| 4 | Not at all | 89 |
41.6%
|
| Sysmiss | 39 |