Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

374 questions · 377 findings · 63 reviews · Pregnancy and Childbirth

No studies found 88 · 23.3%GRADE not reported 32 · 8.5%Very low 92 · 24.4%Low 103 · 27.3%Moderate 50 · 13.3%High 12 · 3.2%

Summary of findings table ‐ Vitamin B12 supplementation vs no supplementation or placebo

Low birthweight · pregnant women

Summary of findings table ‐ Vitamin B12 supplementation showed no clear difference in low birthweight (< 2500 g) compared with placebo/no vitamin B12 supplementation (low certainty).

1 finding from 1 review

Soft cup vs rigid cup

Low Apgar score · Women in the second stage of labour, requiring an assisted vaginal birth

Soft cup showed no clear difference in low Apgar score at 5 minutes (less than 7 or as defined by trial… compared with rigid cup (low certainty).

1 finding from 1 review

Soft cup vs rigid cup

Low umbilical artery pH (< 7.2 or as defined by trial authors) · Women in the second stage of labour, requiring an assisted vaginal birth

Soft cup showed no clear difference in low umbilical artery pH (< 7.2 or as defined by trial authors) compared with rigid cup (low certainty).

1 finding from 1 review

Handheld vacuum vs any vacuum cup

Low Apgar score · Women in the second stage of labour, requiring an assisted vaginal birth

Handheld vacuum showed no clear difference in low Apgar score at 5 minutes (< 7 or as defined by trial authors) compared with any vacuum cup (low certainty).

1 finding from 1 review

Handheld vacuum vs any vacuum cup

Low umbilical artery pH (< 7.2 or as defined by trial authors) · Women in the second stage of labour, requiring an assisted vaginal birth

Handheld vacuum showed no clear difference in low umbilical artery pH (< 7.2 or as defined by trial authors) compared with any vacuum cup (low certainty).

1 finding from 1 review

Any type of forceps vs any vacuum cup

Low Apgar score · Women in the second stage of labour, requiring an assisted vaginal birth

Any type of forceps showed no clear difference in low Apgar score at 5 minutes (< 7 or as defined by trial authors) compared with any type of vacuum cup (moderate certainty).

1 finding from 1 review

Any type of forceps vs any vacuum cup

Low umbilical artery pH (< 7.2 or as defined by trial authors) · Women in the second stage of labour, requiring an assisted vaginal birth

Any type of forceps showed no clear difference in low umbilical artery pH (< 7.2 or as defined by trial authors) compared with any type of vacuum cup (low certainty).

1 finding from 1 review

Intervention not reported

Lower limb compression vs control · women having spinal anaesthesia for caesarean section

It is very uncertain whether the intervention changes lower limb compression vs control (very low certainty).

1 finding from 1 review