| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 2 |
0.1%
|
| 1 | YES | 105 |
2.8%
|
| 2 | NO | 3624 |
95.4%
|
| 7 | NOT APPLICABLE | 69 |
1.8%
|
| Sysmiss | 4211 |