| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 30 |
6.6%
|
| 2 | Every few weeks | 45 |
9.9%
|
| 3 | Every few months | 146 |
32%
|
| 4 | Not at all | 235 |
51.5%
|
| Sysmiss | 111 |