| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 31 |
6.5%
|
| 2 | Every few weeks | 99 |
20.9%
|
| 3 | Every few months | 203 |
42.8%
|
| 4 | Not at all | 141 |
29.7%
|
| Sysmiss | 4 |