| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
4.7%
|
| 2 | Every few weeks | 67 |
21%
|
| 3 | Every few months | 181 |
56.7%
|
| 4 | Not at all | 56 |
17.6%
|
| Sysmiss | 74 |