| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
1.5%
|
| 2 | Every few weeks | 2 |
2.9%
|
| 3 | Every few months | 26 |
38.2%
|
| 4 | Not at all | 39 |
57.4%
|
| Sysmiss | 15 |