| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
2.6%
|
| 2 | Every few weeks | 29 |
9.3%
|
| 3 | Every few months | 93 |
29.7%
|
| 4 | Not at all | 120 |
38.3%
|
| Sysmiss | 63 |
20.1%
|