Predicted effect of screening strategies on outcome of pregnancy
| Observed population | Theoretical population | Amniocentesis | Maternal serum screening | Fetal echocardiography | Combined | |
|---|---|---|---|---|---|---|
| Total cases | 412 | 412 | 412 | 412 | 412 | 412 |
| Terminations | 74 | 0 | 67 | 155 | 14 | 164 |
| Stillbirths | 23 | 31 | 22 | 19 | 30 | 19 |
| Live births | 315 (76%) | 389 (92%) | 323 (78%) | 238 (58%) | 368 (89%) | 229 (56%) |