| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 11 |
2.3%
|
| 2 | Every few weeks | 20 |
4.1%
|
| 3 | Every few months | 97 |
20.1%
|
| 4 | Not at all | 319 |
66%
|
| Sysmiss | 36 |
7.5%
|