What do systematic reviews say?

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

Internet‐based interventions vs usual care or no treatment

Internet‐based interventions showed no clear difference in total mortality compared with usual care or no care (low certainty).

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  OR 0.27 [0.04, 1.63]
  6 studies · 895 participants
  Low

Internet‐based interventions vs usual care or no treatment

Internet‐based interventions showed no clear difference in revascularisation compared with usual care or no care (low certainty).

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  OR 0.69 [0.37, 1.27]
  6 studies · 895 participants
  Low

Internet‐based interventions vs usual care or no treatment

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 439 participants
  Low

Internet‐based interventions vs usual care or no treatment

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 437 participants
  Low

Internet‐based interventions vs usual care or no treatment

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 437 participants
  Low

Internet‐based interventions vs usual care or no treatment

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 439 participants
  Low

Internet‐based interventions vs usual care or no treatment

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  no estimate extracted
  5 studies · 623 participants
  Low

Internet‐based interventions vs usual care or no treatment

• Internet‐based interventions for the secondary prevention of coronary heart disease 2015 · Cochrane Headline outcomes only
  no estimate extracted
  5 studies · 622 participants
  Low

Combination of interventions vs no intervention

Combination of interventions probably leads to higher ANC coverage: one or more visits compared with no intervention (moderate certainty).

• Health system and community level interventions for improving antenatal care coverage and health outcomes 2015 · Cochrane Headline outcomes only
  OR 1.79 [1.47, 2.17]
  5 studies · 12426 participants
  Moderate

Combination of interventions vs no intervention

• Health system and community level interventions for improving antenatal care coverage and health outcomes 2015 · Cochrane Headline outcomes only
  no estimate extracted
  5 studies · 12314 participants
  Moderate

Combination of interventions vs no intervention

• Health system and community level interventions for improving antenatal care coverage and health outcomes 2015 · Cochrane Headline outcomes only
  no estimate extracted
  5 studies · 39130 participants
  Moderate

Combination of interventions vs no intervention

• Health system and community level interventions for improving antenatal care coverage and health outcomes 2015 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 2084 participants
  Moderate

Combination of interventions vs no intervention

• Health system and community level interventions for improving antenatal care coverage and health outcomes 2015 · Cochrane Headline outcomes only
  no estimate extracted
  0 studies · 0 participants
  GRADE not reported

Combination of interventions vs no intervention

Combination of interventions showed no clear difference in ANC coverage: four or more visits compared with no intervention (low certainty).

• Health system and community level interventions for improving antenatal care coverage and health outcomes 2015 · Cochrane Headline outcomes only
  OR 1.48 [0.99, 2.21]
  6 studies · 7840 participants
  Low

Combination of interventions vs no intervention

Combination of interventions showed no clear difference in pregnancy‐related deaths compared with no intervention (moderate certainty).

• Health system and community level interventions for improving antenatal care coverage and health outcomes 2015 · Cochrane Headline outcomes only
  OR 0.7 [0.39, 1.26]
  3 studies · 13756 participants
  Moderate

Dietary behavior change interventions with a caregiver component vs interventions without a caregiver component

• Caregiver involvement in interventions for improving children's dietary intake and physical activity behaviors 2020 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 207 participants
  Low