| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999. Don't Know | 0 |
0%
|
| 0 | 0. No | 98 |
3%
|
| 1 | 1. Yes | 3121 |
96.8%
|
| d | 2 |
0.1%
|
|
| s | 3 |
0.1%
|