| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 35 |
8.7%
|
| 2 | Every few weeks | 118 |
29.3%
|
| 3 | Every few months | 184 |
45.7%
|
| 4 | Not at all | 66 |
16.4%
|
| Sysmiss | 20 |