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| Region1 | Overall mean knowledge scores at T0 | Overall mean knowledge scores at T1 |
|---|---|---|
| M (SD) | M (SD) | |
| 1 | 24.3 (3.9) | 29.6 (2.7) |
| 2 | 22.5 (3.7) | 28.9 (2.8) |
| 3 | 22.6 (3.5) | 28.7 (2.8) |
| 4 | 22.9 (3.5) | 28.0 (4.3) |
| 5 | 23.4 (3.7) | 28.8 (3.1) |
| 6 | 23.4 (3.7) | 28.6 (2.8) |
| 7 | 24.0 (4.0) | 28.2 (2.9) |
1 Data of the two Regional Centers for prenatal screening in Amsterdam are merged.
