| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
1.4%
|
| 2 | Every few weeks | 6 |
8.3%
|
| 3 | Every few months | 13 |
18.1%
|
| 4 | Not at all | 52 |
72.2%
|
| Sysmiss | 12 |