Requirements to prevent one outcome—from model comparing universal repeat screening of syphilis in late pregnancy with single screening
| Outcome | Cost | Women screened in third trimester | Women treated for syphilis—TP and FP | Additional false positives |
| Congenital syphilis | £1 791 880 | 124 294 | 251 | 249 |
| Intrauterine fetal demise | £37 852 707 | 2 625 664 | 5300 | 5251 |
| Neonatal death | £79 507 578 | 5 515 066 | 11 133 | 11 030 |
FP, false positive; TP, true positive.