| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 22 |
9.7%
|
| 2 | Every few weeks | 40 |
17.6%
|
| 3 | Every few months | 94 |
41.4%
|
| 4 | Not at all | 71 |
31.3%
|
| Sysmiss | 33 |