| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
2.9%
|
| 2 | Every few weeks | 23 |
11%
|
| 3 | Every few months | 100 |
47.6%
|
| 4 | Not at all | 46 |
21.9%
|
| Sysmiss | 35 |
16.7%
|