| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 148 |
0.6%
|
| 0 | No | 577 |
2.5%
|
| 1 | Yes | 3519 |
15.2%
|
| 7 | Not applicable | 18953 |
81.7%
|
| Sysmiss | 1104 |