| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 18 |
3.7%
|
| 2 | Every few weeks | 61 |
12.7%
|
| 3 | Every few months | 166 |
34.4%
|
| 4 | Not at all | 128 |
26.6%
|
| Sysmiss | 109 |
22.6%
|