| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 34 |
12.6%
|
| 2 | Every few weeks | 53 |
19.7%
|
| 3 | Every few months | 79 |
29.4%
|
| 4 | Not at all | 103 |
38.3%
|
| Sysmiss | 38 |