| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
2.6%
|
| 2 | Every few weeks | 16 |
8.2%
|
| 3 | Every few months | 49 |
25.3%
|
| 4 | Not at all | 69 |
35.6%
|
| Sysmiss | 55 |
28.4%
|