| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Once | 5908 | 5931 |
84.5%
|
| 2 | More than once | 1045 | 1090 |
15.5%
|
| 9 | 40 | 38 | ||
| Sysmiss | 4546 | 4263 |