| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
0.9%
|
| 2 | Every few weeks | 24 |
10.7%
|
| 3 | Every few months | 89 |
39.6%
|
| 4 | Not at all | 110 |
48.9%
|
| Sysmiss | 32 |