| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
2.1%
|
| 2 | Every few weeks | 6 |
3.1%
|
| 3 | Every few months | 63 |
32.8%
|
| 4 | Not at all | 119 |
62%
|
| Sysmiss | 35 |