TY - JOUR

T1 - Effects of antenatal diet and physical activity on maternal and fetal outcomes

T2 - individual patient data meta-analysis and health economic evaluation

AU - Rogozińska, Ewelina

AU - Marlin, Nadine

AU - Jackson, Louise

AU - Rayanagoudar, Girish

AU - Ruifrok, Anneloes E

AU - Dodds, Julie

AU - Molyneaux, Emma

AU - van Poppel, Mireille Nm

AU - Poston, Lucilla

AU - Vinter, Christina Anne

AU - McAuliffe, Fionnuala M

AU - Dodd, Jodie M

AU - Owens, Julie A

AU - Barakat Carballo, Ruben

AU - Perales, Maria

AU - Cecatti, Jose Guilherme

AU - Surita, Fernanda

AU - Yeo, SeonAe

AU - Bogaerts, Annick

AU - Devlieger, Roland

AU - Teede, Helena

AU - Harrison, Cheryce

AU - Haakstad, Lene

AU - Shen, Garry X

AU - Shub, Alexis

AU - Beltagy, Nermeen El

AU - Motahari, Narges

AU - Khoury, Janette

AU - Tonstad, Serena

AU - Luoto, Riitta

AU - Kinnunen, Tarja I

AU - Guelfi, Kym

AU - Facchinetti, Fabio

AU - Petrella, Elisabetta

AU - Phelan, Suzanne

AU - Scudeller, Tânia T

AU - Rauh, Kathrin

AU - Hauner, Hans

AU - Renault, Kristina Martha

AU - de Groot, Christianne J M

AU - Sagedal, Linda Reme

AU - Vistad, Ingvild

AU - Stafne, Signe Nilssen

AU - Mørkved, Siv

AU - Salvesen, Kjell Åsmund

AU - Jensen, Dorte Møller

AU - Vitolo, Marcia

AU - Astrup, Arne

AU - Geiker, Nina Rica Wium

AU - Kerry, Sally

AU - International Weight Management in Pregnancy (i-WIP) Collaborative Group

N1 - CURIS 2017 NEXS 208

PY - 2017

Y1 - 2017

N2 - Background: Diet- and physical activity-based interventions in pregnancy have the potential to alter maternal and child outcomes.Objectives: To assess whether or not the effects of diet and lifestyle interventions vary in subgroups of women, based on maternal body mass index (BMI), age, parity, Caucasian ethnicity and underlying medical condition(s), by undertaking an individual patient data (IPD) meta-analysis. We also evaluated the association of gestational weight gain (GWG) with adverse pregnancy outcomes and assessed the cost-effectiveness of the interventions.Data sources: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Database of Abstracts of Reviews of Effects and Health Technology Assessment database were searched from October 2013 to March 2015 (to update a previous search).Review methods: Researchers from the International Weight Management in Pregnancy Collaborative Network shared the primary data. For each intervention type and outcome, we performed a two-step IPD random-effects meta-analysis, for all women (except underweight) combined and for each subgroup of interest, to obtain summary estimates of effects and 95% confidence intervals (CIs), and synthesised the differences in effects between subgroups. In the first stage, we fitted a linear regression adjusted for baseline (for continuous outcomes) or a logistic regression model (for binary outcomes) in each study separately; estimates were combined across studies using random-effects meta-analysis models. We quantified the relationship between weight gain and complications, and undertook a decision-analytic model-based economic evaluation to assess the cost-effectiveness of the interventions.Results: Diet and lifestyle interventions reduced GWG by an average of 0.70 kg (95% CI -0.92 to -0.48 kg; 33 studies, 9320 women). The effects on composite maternal outcome [summary odds ratio (OR) 0.90, 95% CI 0.79 to 1.03; 24 studies, 8852 women] and composite fetal/neonatal outcome (summary OR 0.94, 95% CI 0.83 to 1.08; 18 studies, 7981 women) were not significant. The effect did not vary with baseline BMI, age, ethnicity, parity or underlying medical conditions for GWG, and composite maternal and fetal outcomes. Lifestyle interventions reduce Caesarean sections (OR 0.91, 95% CI 0.83 to 0.99), but not other individual maternal outcomes such as gestational diabetes mellitus (OR 0.89, 95% CI 0.72 to 1.10), pre-eclampsia or pregnancy-induced hypertension (OR 0.95, 95% CI 0.78 to 1.16) and preterm birth (OR 0.94, 95% CI 0.78 to 1.13). There was no significant effect on fetal outcomes. The interventions were not cost-effective. GWG, including adherence to the Institute of Medicine-recommended targets, was not associated with a reduction in complications. Predictors of GWG were maternal age (summary estimate -0.10 kg, 95% CI -0.14 to -0.06 kg) and multiparity (summary estimate -0.73 kg, 95% CI -1.24 to -0.23 kg).Limitations: The findings were limited by the lack of standardisation in the components of intervention, residual heterogeneity in effects across studies for most analyses and the unavailability of IPD in some studies.Conclusion: Diet and lifestyle interventions in pregnancy are clinically effective in reducing GWG irrespective of risk factors, with no effects on composite maternal and fetal outcomes.Future work: The differential effects of lifestyle interventions on individual pregnancy outcomes need evaluation.Study registration: This study is registered as PROSPERO CRD42013003804.Funding: The National Institute for Health Research Health Technology Assessment programme.

AB - Background: Diet- and physical activity-based interventions in pregnancy have the potential to alter maternal and child outcomes.Objectives: To assess whether or not the effects of diet and lifestyle interventions vary in subgroups of women, based on maternal body mass index (BMI), age, parity, Caucasian ethnicity and underlying medical condition(s), by undertaking an individual patient data (IPD) meta-analysis. We also evaluated the association of gestational weight gain (GWG) with adverse pregnancy outcomes and assessed the cost-effectiveness of the interventions.Data sources: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Database of Abstracts of Reviews of Effects and Health Technology Assessment database were searched from October 2013 to March 2015 (to update a previous search).Review methods: Researchers from the International Weight Management in Pregnancy Collaborative Network shared the primary data. For each intervention type and outcome, we performed a two-step IPD random-effects meta-analysis, for all women (except underweight) combined and for each subgroup of interest, to obtain summary estimates of effects and 95% confidence intervals (CIs), and synthesised the differences in effects between subgroups. In the first stage, we fitted a linear regression adjusted for baseline (for continuous outcomes) or a logistic regression model (for binary outcomes) in each study separately; estimates were combined across studies using random-effects meta-analysis models. We quantified the relationship between weight gain and complications, and undertook a decision-analytic model-based economic evaluation to assess the cost-effectiveness of the interventions.Results: Diet and lifestyle interventions reduced GWG by an average of 0.70 kg (95% CI -0.92 to -0.48 kg; 33 studies, 9320 women). The effects on composite maternal outcome [summary odds ratio (OR) 0.90, 95% CI 0.79 to 1.03; 24 studies, 8852 women] and composite fetal/neonatal outcome (summary OR 0.94, 95% CI 0.83 to 1.08; 18 studies, 7981 women) were not significant. The effect did not vary with baseline BMI, age, ethnicity, parity or underlying medical conditions for GWG, and composite maternal and fetal outcomes. Lifestyle interventions reduce Caesarean sections (OR 0.91, 95% CI 0.83 to 0.99), but not other individual maternal outcomes such as gestational diabetes mellitus (OR 0.89, 95% CI 0.72 to 1.10), pre-eclampsia or pregnancy-induced hypertension (OR 0.95, 95% CI 0.78 to 1.16) and preterm birth (OR 0.94, 95% CI 0.78 to 1.13). There was no significant effect on fetal outcomes. The interventions were not cost-effective. GWG, including adherence to the Institute of Medicine-recommended targets, was not associated with a reduction in complications. Predictors of GWG were maternal age (summary estimate -0.10 kg, 95% CI -0.14 to -0.06 kg) and multiparity (summary estimate -0.73 kg, 95% CI -1.24 to -0.23 kg).Limitations: The findings were limited by the lack of standardisation in the components of intervention, residual heterogeneity in effects across studies for most analyses and the unavailability of IPD in some studies.Conclusion: Diet and lifestyle interventions in pregnancy are clinically effective in reducing GWG irrespective of risk factors, with no effects on composite maternal and fetal outcomes.Future work: The differential effects of lifestyle interventions on individual pregnancy outcomes need evaluation.Study registration: This study is registered as PROSPERO CRD42013003804.Funding: The National Institute for Health Research Health Technology Assessment programme.

U2 - 10.3310/hta21410

DO - 10.3310/hta21410

M3 - Review

C2 - 28795682

VL - 21

SP - 1

EP - 158

JO - Health Technology Assessment

JF - Health Technology Assessment

SN - 1366-5278

IS - 41

ER -