| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 20 |
7.4%
|
| 2 | Every few weeks | 41 |
15.1%
|
| 3 | Every few months | 95 |
34.9%
|
| 4 | Not at all | 116 |
42.6%
|
| Sysmiss | 47 |