| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
2.6%
|
| 2 | Every few weeks | 41 |
9%
|
| 3 | Every few months | 129 |
28.4%
|
| 4 | Not at all | 273 |
60%
|
| Sysmiss | 50 |