| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 11 |
3.1%
|
| 2 | Every few weeks | 38 |
10.6%
|
| 3 | Every few months | 93 |
26%
|
| 4 | Not at all | 216 |
60.3%
|
| Sysmiss | 63 |