| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
2.6%
|
| 2 | Every few weeks | 8 |
7%
|
| 3 | Every few months | 49 |
42.6%
|
| 4 | Not at all | 55 |
47.8%
|
| Sysmiss | 19 |