| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
4.6%
|
| 2 | Every few weeks | 16 |
10.5%
|
| 3 | Every few months | 28 |
18.3%
|
| 4 | Not at all | 102 |
66.7%
|
| Sysmiss | 27 |