| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 4194 |
57.3%
|
| 2 | Once or twice | 1257 |
17.2%
|
| 3 | A few times | 1078 |
14.7%
|
| 4 | Many times | 791 |
10.8%
|
| Sysmiss | 540 |