| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
2.7%
|
| 2 | Every few weeks | 64 |
19%
|
| 3 | Every few months | 165 |
49.1%
|
| 4 | Not at all | 98 |
29.2%
|
| Sysmiss | 104 |