| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
1.4%
|
| 2 | Every few weeks | 2 |
2.8%
|
| 3 | Every few months | 43 |
59.7%
|
| 4 | Not at all | 26 |
36.1%
|
| Sysmiss | 24 |