| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
7.6%
|
| 2 | Every few weeks | 30 |
22.7%
|
| 3 | Every few months | 63 |
47.7%
|
| 4 | Not at all | 29 |
22%
|
| -99 | 3 | ||
| Sysmiss | 25 |