| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 2 |
0.2%
|
|
| 1 | Yes | 902 |
76.8%
|
| 2 | No | 249 |
21.2%
|
| 9 | Don't know | 22 |
1.9%
|
| Sysmiss | 4185 |