| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 0 |
0%
|
| 1 | YES | 78 |
2.1%
|
| 2 | NO | 3630 |
95.5%
|
| 7 | NOT APPLICABLE | 92 |
2.4%
|
| Sysmiss | 4211 |