| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 22 |
6.9%
|
| 2 | Every few weeks | 69 |
21.6%
|
| 3 | Every few months | 157 |
49.1%
|
| 4 | Not at all | 72 |
22.5%
|
| Sysmiss | 35 |