Intervention not reported
Preterm birth < 37 weeks · pregnant women and their babies
The intervention leads to lower preterm birth < 37 weeks (high certainty).
1 finding from 1 review
- RR 0.89 [0.81, 0.97]26 studies · 10304 participantsHigh
The intervention leads to lower preterm birth < 37 weeks (high certainty).
The intervention leads to lower early preterm birth < 34 weeks (high certainty).