| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 23 |
7.2%
|
| 2 | Every few weeks | 58 |
18.1%
|
| 3 | Every few months | 95 |
29.6%
|
| 4 | Not at all | 145 |
45.2%
|
| Sysmiss | 72 |