| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
2%
|
| 2 | Every few weeks | 13 |
6.6%
|
| 3 | Every few months | 84 |
42.9%
|
| 4 | Not at all | 95 |
48.5%
|
| Sysmiss | 42 |