What do systematic reviews say?

Dietary advice vs standard‐of‐care therapy

Dietary advice interventions may leads to lower hypertensive disorders of pregnancy (pregnancy‐induced hypertension) compared with standard care (maternal outcomes) (low certainty).

• Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 0.3 [0.1, 0.88]
  2 studies · 282 participants
  Low

Dietary advice vs standard‐of‐care therapy

Dietary advice interventions showed no clear difference in hypertensive disorders of pregnancy (pre‐eclampsia) compared with standard care (maternal outcomes) (low certainty).

• Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 0.61 [0.25, 1.46]
  2 studies · 282 participants
  Low

Dietary advice vs standard‐of‐care therapy

Dietary advice interventions showed no clear difference in caesarean section compared with standard care (maternal outcomes) (low certainty).

• Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 0.98 [0.78, 1.24]
  4 studies · 1194 participants
  Low

Dietary advice vs standard‐of‐care therapy

It is very uncertain whether dietary advice interventions changes perineal trauma (anal sphincter injury) compared with standard care (maternal outcomes) (very low certainty).

• Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 0.83 [0.23, 3.08]
  1 study · 759 participants
  Very low

Dietary advice vs standard‐of‐care therapy

Dietary advice interventions showed no clear difference in gestational weight gain (kg) compared with standard care (maternal outcomes) (low certainty).

• Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  no estimate extracted
  5 studies · 1336 participants
  Low

Dietary advice vs standard‐of‐care therapy

• 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

Dietary advice vs standard‐of‐care therapy

• Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 159 participants
  Very low

Dietary advice vs standard‐of‐care therapy

• 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

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

It is very uncertain whether summary of findings: Low‐moderate GI diet changes hypertensive disorders of pregnancy: severe hypertension or… compared with moderate‐high GI diet (maternal outcomes) (very low certainty).

• Different types of dietary advice for women with gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 1.02 [0.07, 15.86]
  1 study · 95 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

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

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

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

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

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

Summary of findings: Energy‐restricted diet vs no energy‐restricted diet (maternal outcomes)

Summary of findings: Energy‐restricted diet showed no clear difference in hypertensive disorders of pregnancy: pre‐eclampsia compared with no energy‐restricted diet (maternal outcomes) (low certainty).

• Different types of dietary advice for women with gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 1 [0.51, 1.97]
  1 study · 117 participants
  Low

Summary of findings: Energy‐restricted diet vs no energy‐restricted diet (maternal outcomes)

Summary of findings: Energy‐restricted diet showed no clear difference in caesarean section compared with no energy‐restricted diet (maternal outcomes) (low certainty).

• Different types of dietary advice for women with gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 1.12 [0.8, 1.56]
  2 studies · 420 participants
  Low

Summary of findings: Energy‐restricted diet vs no energy‐restricted diet (maternal outcomes)

Summary of findings: Energy‐restricted diet showed no clear difference in induction of labour compared with no energy‐restricted diet (maternal outcomes) (low certainty).

• Different types of dietary advice for women with gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 1.02 [0.68, 1.53]
  1 study · 114 participants
  Low

Summary of findings: Energy‐restricted diet vs no energy‐restricted diet (maternal 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

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

It is very uncertain whether summary of findings: Low‐moderate GI diet changes hypertensive disorders of pregnancy: eclampsia compared with moderate‐high GI diet (maternal outcomes) (very low certainty).

• Different types of dietary advice for women with gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
  RR 0.34 [0.01, 8.14]
  1 study · 83 participants
  Very low