| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
1.9%
|
| 2 | Every few weeks | 28 |
13.1%
|
| 3 | Every few months | 64 |
29.9%
|
| 4 | Not at all | 118 |
55.1%
|
| Sysmiss | 12 |