| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
6.5%
|
| 2 | Every few weeks | 26 |
11.3%
|
| 3 | Every few months | 61 |
26.5%
|
| 4 | Not at all | 128 |
55.7%
|
| Sysmiss | 30 |