| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
5.1%
|
| 2 | Every few weeks | 13 |
13.3%
|
| 3 | Every few months | 55 |
56.1%
|
| 4 | Not at all | 25 |
25.5%
|
| Sysmiss | 9 |