| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
1.6%
|
| 2 | Every few weeks | 20 |
10.8%
|
| 3 | Every few months | 73 |
39.2%
|
| 4 | Not at all | 90 |
48.4%
|
| Sysmiss | 52 |