| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
2.2%
|
| 2 | Every few weeks | 20 |
8.9%
|
| 3 | Every few months | 67 |
29.9%
|
| 4 | Not at all | 132 |
58.9%
|
| Sysmiss | 36 |