| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 14 |
3.4%
|
| 2 | Every few weeks | 39 |
9.5%
|
| 3 | Every few months | 94 |
22.9%
|
| 4 | Not at all | 263 |
64.1%
|
| Sysmiss | 65 |