| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | No | 5152 | 5202 |
96.8%
|
| 1 | Knows no method | 163 | 173 |
3.2%
|
| 9 | 30 | 31 | ||
| Sysmiss | 6194 | 5915 |