| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
3.7%
|
| 2 | Every few weeks | 11 |
8.2%
|
| 3 | Every few months | 33 |
24.6%
|
| 4 | Not at all | 85 |
63.4%
|
| Sysmiss | 32 |