| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
3.3%
|
| 2 | Every few weeks | 26 |
7.2%
|
| 3 | Every few months | 68 |
18.9%
|
| 4 | Not at all | 171 |
47.6%
|
| Sysmiss | 82 |
22.8%
|