| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0.1%
|
|
| 1 | Yes | 6 |
0.3%
|
| 2 | No | 1699 |
98.6%
|
| 77 | Don't know | 17 |
1%
|
| Sysmiss | 810 |