| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
1.9%
|
| 2 | Every few weeks | 21 |
8%
|
| 3 | Every few months | 55 |
20.8%
|
| 4 | Not at all | 183 |
69.3%
|
| Sysmiss | 39 |