Uptake of antenatal tests and their diagnostic value for predicting delivery within 7 days
| 7 day outcome | ||||
|---|---|---|---|---|
| Antenatal test | All referrals (n=554) (%) | Preterm labour, intact membranes (n=189) (%) | PPV | NPV |
| Fibronectin | 40 (7.2%) | 31 (16.4%) | 33.3% | 83.3% |
| Actim Partus | 25 (4.5%) | 21 (11.1%) | 13.3% | 100% |
PPV, positive predictive value; NPV, negative predictive value