| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
0.4%
|
| 2 | Every few weeks | 20 |
8.3%
|
| 3 | Every few months | 138 |
57%
|
| 4 | Not at all | 83 |
34.3%
|
| Sysmiss | 52 |