| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 54 |
11.4%
|
| 2 | Every few weeks | 127 |
26.8%
|
| 3 | Every few months | 235 |
49.6%
|
| 4 | Not at all | 58 |
12.2%
|
| Sysmiss | 4 |