| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 4199 |
57.4%
|
| 2 | Once or twice | 796 |
10.9%
|
| 3 | A few times | 1287 |
17.6%
|
| 4 | Many times | 1038 |
14.2%
|
| Sysmiss | 540 |