| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
1.5%
|
| 2 | Every few weeks | 20 |
9.9%
|
| 3 | Every few months | 86 |
42.6%
|
| 4 | Not at all | 72 |
35.6%
|
| Sysmiss | 21 |
10.4%
|