Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

71 questions · 71 findings · 36 reviews · Pregnancy and Childbirth

No studies found 13 · 18.3%GRADE not reported 14 · 19.7%Very low 13 · 18.3%Low 20 · 28.2%Moderate 9 · 12.7%High 2 · 2.8%

Any antihypertensive drug vs no antihypertensive drugs/placebo

Admission to neonatal or intensive care nursery · women with mild to moderate hypertension during pregnancy

Any antihypertensive drug showed no clear difference in admission to neonatal or intensive care nursery compared with no antihypertensive drugs/placebo (low certainty).

1 finding from 1 review

Intervention not reported

Maternal admission to intensive care · pregnant women

The intervention showed no clear difference in maternal admission to intensive care (low certainty).

1 finding from 1 review

Intervention not reported

Social support vs less intensive interventions 9 · Pregnant women who smoke

The intervention showed no clear difference in social support vs less intensive interventions 9 (high certainty).

1 finding from 1 review

Planned early birth vs expectant management

Admission to neonatal intensive care unit · preterm prelabour rupture of membranes (PPROM)

Planned early birth probably leads to higher admission to neonatal intensive care compared with expectant management (moderate certainty).

1 finding from 1 review

Amnioinfusion vs no amnioinfusion

Perinatal death or severe morbidity · pregnant women with confirmed or suspected chorioamnionitis

The review found no eligible studies for this question.

1 finding from 1 review

Reduced number of antenatal care visits/goal‐oriented vs standard antenatal care visits

Admission to neonatal intensive care unit · Pregnant women at low risk of complications

Reduced number of antenatal care visits/goal‐oriented showed no clear difference in neonatal intensive care unit admission compared with standard antenatal care visits (moderate certainty).

1 finding from 1 review