| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 18 |
0.7%
|
| 2 | No | 2684 |
99.2%
|
| 7 | Don't know | 1 |
0%
|
| 9 | Missing | 3 |
0.1%
|
| Sysmiss | 2 |