| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 0 |
0%
|
| 1 | YES | 736 |
19.4%
|
| 2 | NO | 2999 |
78.9%
|
| 7 | NOT APPLICABLE | 65 |
1.7%
|
| Sysmiss | 4211 |