| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 76 |
26.3%
|
| 2 | Every few months | 113 |
39.1%
|
| 3 | Every few weeks | 74 |
25.6%
|
| 4 | Every few days | 26 |
9%
|
| -99 | 10 | ||
| Sysmiss | 53 |