Findings

What do systematic reviews say?

5 questions · 5 findings · 3 reviews · Pregnancy and Childbirth

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 2 · 40%Low 2 · 40%Moderate 1 · 20%High 0 · 0%

Tight‐moderate vs less‐tight glycaemic targets (maternal outcomes)

Caesarean section · pregnant women with pre‐existing type 1 diabetes

Tight‐moderate may leads to lower caesarean section compared with loose glycaemic control (maternal outcomes) (low certainty).

1 finding from 1 review

Different intensities of glycaemic control for pregnant women with pre‐existing diabetes 2016 · Cochrane Headline outcomes only
RR 0.28 [0.1, 0.78]
1 study · 60 participants
Low

Summary of findings: Low‐moderate GI diet vs moderate‐high GI diet (maternal outcomes)

Caesarean section · pregnant women with GDM

Summary of findings: Low‐moderate GI diet showed no clear difference in caesarean section compared with moderate‐high GI diet (maternal outcomes) (low certainty).

1 finding from 1 review

Different types of dietary advice for women with gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
RR 0.66 [0.29, 1.47]
1 study · 63 participants
Low

Tight vs moderate glycaemic control (maternal outcomes)

Caesarean section · pregnant women with pre‐existing type 1 diabetes

It is very uncertain whether tight changes caesarean section compared with moderate glycaemic control (maternal outcomes) (very low certainty).

1 finding from 1 review

Different intensities of glycaemic control for pregnant women with pre‐existing diabetes 2016 · Cochrane Headline outcomes only
RR 1.21 [0.22, 6.5]
1 study · 45 participants
Very low

Very tight vs tight‐moderate glycaemic control (infant outcomes)

Caesarean section · pregnant women with pre‐existing type 1 diabetes

It is very uncertain whether very tight changes caesarean section compared with tight‐moderate glycaemic control (maternal outcomes) (very low certainty).

1 finding from 1 review

Different intensities of glycaemic control for pregnant women with pre‐existing diabetes 2016 · Cochrane Headline outcomes only
RR 0.92 [0.49, 1.73]
1 study · 22 participants
Very low

Any antihypertensive drug vs no antihypertensive drugs/placebo

Elective delivery (induction of labour + elective caesarean section) · women with mild to moderate hypertension during pregnancy

Any antihypertensive drug showed no clear difference in elective delivery (induction of labour + elective caesarean section) compared with no antihypertensive drugs/placebo (moderate certainty).

1 finding from 1 review

Antihypertensive drug therapy for mild to moderate hypertension during pregnancy 2018 · Cochrane Headline outcomes only
RR 0.93 [0.84, 1.04]
4 studies · 710 participants
Moderate