| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
1.7%
|
| 2 | Every few weeks | 6 |
5.2%
|
| 3 | Every few months | 45 |
38.8%
|
| 4 | Not at all | 63 |
54.3%
|
| Sysmiss | 40 |