| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 13 |
8.4%
|
| 2 | Every few weeks | 35 |
22.6%
|
| 3 | Every few months | 73 |
47.1%
|
| 4 | Not at all | 34 |
21.9%
|
| -99 | 9 | ||
| Sysmiss | 19 |