| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 17 |
7.5%
|
| 2 | Every few weeks | 53 |
23.5%
|
| 3 | Every few months | 109 |
48.2%
|
| 4 | Not at all | 47 |
20.8%
|
| -99 | 3 | ||
| Sysmiss | 31 |