| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 30 |
8.4%
|
| 2 | Every few weeks | 51 |
14.2%
|
| 3 | Every few months | 78 |
21.7%
|
| 4 | Not at all | 131 |
36.5%
|
| Sysmiss | 69 |
19.2%
|