| Value | Category | Cases | |
|---|---|---|---|
| 1 | Asked for the test | 3909 |
38.7%
|
| 2 | Offered and accepted | 3148 |
31.2%
|
| 3 | Required | 3036 |
30%
|
| 9 | Missing | 11 |
0.1%
|
| Sysmiss | 31702 |