What do systematic reviews say?

Tight‐moderate vs loose glycaemic control (infant outcomes)

It is very uncertain whether tight‐moderate changes perinatal mortality compared with loose glycaemic control (infant outcomes) (very low certainty).

• Different intensities of glycaemic control for pregnant women with pre‐existing diabetes 2016 · Cochrane Headline outcomes only
  RR 0.07 [0, 1.37]
  1 study · 60 participants
  Very low

Summary of findings: Low‐moderate GI diet vs moderate‐high GI diet (neonatal/child/adulthood outcomes)

The review found no eligible studies for this question.

• Different types of dietary advice for women with gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Low‐GI dietary advice vs moderate‐ to high‐GI dietary advice (child outcomes)

• Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  no estimate extracted
  0 studies · 0 participants
  GRADE not reported

Tight vs moderate glycaemic control (infant outcomes)

• Different intensities of glycaemic control for pregnant women with pre‐existing diabetes 2016 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 45 participants
  Very low

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

• Different intensities of glycaemic control for pregnant women with pre‐existing diabetes 2016 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 22 participants
  Low