| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
9.7%
|
| 2 | Every few weeks | 20 |
16.1%
|
| 3 | Every few months | 52 |
41.9%
|
| 4 | Not at all | 40 |
32.3%
|
| Sysmiss | 14 |