| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
3%
|
| 2 | Every few weeks | 28 |
10.5%
|
| 3 | Every few months | 30 |
11.2%
|
| 4 | Not at all | 201 |
75.3%
|
| Sysmiss | 75 |