Findings

What do systematic reviews say?

22 questions · 22 findings · 3 reviews · Pregnancy and Childbirth

No studies found 1 · 4.5%GRADE not reported 2 · 9.1%Very low 1 · 4.5%Low 9 · 40.9%Moderate 8 · 36.4%High 1 · 4.5%

Preterm birth less than 34 weeks' gestation · women with singleton pregnancies at risk of cervical insufficiency

Cervical pessary showed no clear difference in delivery before 34 weeks' gestation compared with vaginal progesterone (moderate certainty).

1 finding from 1 review

Cervical pessary for preventing preterm birth in singleton pregnancies 2022 · Cochrane Headline outcomes only
RR 0.72 [0.52, 1.02]
3 studies · 1126 participants
Moderate

Preterm birth · women with singleton pregnancies at risk of cervical insufficiency

Cervical pessary showed no clear difference in delivery before 37 weeks' gestation compared with vaginal progesterone (moderate certainty).

1 finding from 1 review

Cervical pessary for preventing preterm birth in singleton pregnancies 2022 · Cochrane Headline outcomes only
RR 0.89 [0.73, 1.09]
3 studies · 1126 participants
Moderate