| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
5.2%
|
| 2 | Every few weeks | 11 |
11.5%
|
| 3 | Every few months | 53 |
55.2%
|
| 4 | Not at all | 27 |
28.1%
|
| Sysmiss | 11 |