| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 17 |
5.3%
|
| 2 | Every few weeks | 24 |
7.5%
|
| 3 | Every few months | 88 |
27.3%
|
| 4 | Not at all | 193 |
59.9%
|
| Sysmiss | 46 |