| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | No | 5144 | 5226 |
96.5%
|
| 1 | Knows no method | 178 | 188 |
3.5%
|
| 9 | 24 | 29 | ||
| Sysmiss | 5276 | 4978 |