| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
2.5%
|
| 2 | Every few weeks | 40 |
11%
|
| 3 | Every few months | 110 |
30.2%
|
| 4 | Not at all | 205 |
56.3%
|
| Sysmiss | 57 |