| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Once | 5600 | 5786 |
84.5%
|
| 2 | More than once | 1041 | 1058 |
15.5%
|
| 9 | 22 | 28 | ||
| Sysmiss | 3959 | 3549 |