| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 20 |
5%
|
| 2 | Every few weeks | 45 |
11.3%
|
| 3 | Every few months | 108 |
27.1%
|
| 4 | Not at all | 226 |
56.6%
|
| Sysmiss | 76 |