| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 6217 |
84.9%
|
| 2 | Once or twice | 405 |
5.5%
|
| 3 | A few times | 396 |
5.4%
|
| 4 | Many times | 302 |
4.1%
|
| Sysmiss | 540 |