| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
6.4%
|
| 2 | Every few weeks | 8 |
8.5%
|
| 3 | Every few months | 13 |
13.8%
|
| 4 | Not at all | 67 |
71.3%
|
| Sysmiss | 20 |