| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
0.7%
|
| 2 | Every few weeks | 11 |
7.6%
|
| 3 | Every few months | 36 |
25%
|
| 4 | Not at all | 96 |
66.7%
|
| Sysmiss | 36 |