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Cochrane Database of Systematic Reviews

Interventions for increasing fruit and vegetable consumption in children aged five years and under

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DOI:
https://doi.org/10.1002/14651858.CD008552.pub3Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 25 septiembre 2017see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Corazón

Copyright:
  1. Copyright © 2017 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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Autores

  • Rebecca K Hodder

    Correspondencia a: Hunter New England Population Health, Hunter New England Local Health District, Wallsend, Australia

    [email protected]

    [email protected]

  • Fiona G Stacey

    School of Medicine and Public Health, University of Newcastle, Hunter Medical Research Institute, Priority Research Centre in Health Behaviour, and Priority Research Centre in Physical Activity and Nutrition, Callaghan, Australia

  • Rebecca J Wyse

    School of Medicine and Public Health, University of Newcastle, Callaghan, Australia

  • Kate M O'Brien

    Hunter New England Population Health, Newcastle, Australia

  • Tara Clinton‐McHarg

    School of Medicine and Public Health, University of Newcastle, Callaghan, Australia

  • Flora Tzelepis

    School of Medicine and Public Health, University of Newcastle, Callaghan, Australia

  • Nicole K Nathan

    Hunter New England Population Health, Hunter New England Local Health District, Wallsend, Australia

  • Erica L James

    School of Medicine and Public Health, University of Newcastle, Hunter Medical Research Institute, Callaghan, Australia

  • Kate M Bartlem

    School of Psychology, University of Newcastle, Callaghan, Australia

  • Rachel Sutherland

    Hunter New England Population Health, Hunter New England Local Health District, Wallsend, Australia

  • Emma Robson

    Hunter Population Health, Hunter New England Local Health District, Wallsend, Australia

  • Sze Lin Yoong

    Hunter New England Population Health, Hunter New England Local Health District, Wallsend, Australia

  • Luke Wolfenden

    School of Medicine and Public Health, University of Newcastle, Callaghan, Australia

Contributions of authors

All authors contributed to the conception of the research and were involved in the preparation of the review including providing critical comment on drafts.
RH led the review update and manuscript drafting.
RH and FS conducted searches of other sources.
RH, FS, RW, KO, NN, SY, EJ and KB screened titles and abstracts.
RH, FS, NN, RS, KO, RW, SY and LW screened full texts to determine study eligibility.
EJ, TCM, RW, KB, KO, ER, RH and RS extracted data from eligible trials.
FS, FT and TCM assessed risk of bias.
RH, NN and LW assessed quality of studies (GRADE).

Sources of support

Internal sources

  • Hunter Medical Research Institute, Australia.

    Infrastructure support

  • The University of Newcastle, Australia.

    Salary Support

  • Deakin University, Australia.

    Salary Support

  • Hunter New England Area Health Service, Australia.

    Salary Support

  • Cancer Council NSW, Australia.

    Salary Support

  • Cancer Institute NSW, Australia.

    Salary support

External sources

  • No sources of support supplied

Declarations of interest

Rebecca K Hodder: none known.

Fiona G Stacey: none known.

Kate M O'Brien: none known.

Tara Clinton‐McHarg: none known.

Flora Tzelepis: none known.

Nicole K Nathan: none known.

Erica L James: none known.

Kate M Bartlem: none known.

Rachel Sutherland: none known.

Emma Robson: none known.

Sze Lin Yoong: none known.

Rebecca J Wyse and Luke Wolfenden: are authors on an included randomised trial of an intervention to increase fruit and vegetable consumption (Wyse 2014); neither were involved in the determination of study eligibility, data extraction or risk of bias assessment for this study. The authors have not received any benefit, in cash or kind, any hospitality, or any subsidy derived from the food industry or any other source perceived to have an interest in the outcome of the review.

Acknowledgements

We would like to thank the authors who contributed to the original review: Ben Britton, Karen Campbell and Patrick McElduff. We would also like to acknowledge the contribution of health promotion practitioners, community dieticians, Children's Services staff who provided comment on the scope and focus of the review protocol, and authors of trials who provided further information to the review team to facilitate assessments of trial eligibility and analysis. We would also like to acknowledge the assistance of the Cochrane Heart Group for executing the search and Sarah Haley who provided translation services. We would also like to acknowledge the authors of all included studies for providing additional information regarding their trials for this review.

Version history

Published

Title

Stage

Authors

Version

2020 May 25

Interventions for increasing fruit and vegetable consumption in children aged five years and under

Review

Rebecca K Hodder, Kate M O'Brien, Flora Tzelepis, Rebecca J Wyse, Luke Wolfenden

https://doi.org/10.1002/14651858.CD008552.pub7

2019 Nov 07

Interventions for increasing fruit and vegetable consumption in children aged five years and under

Review

Rebecca K Hodder, Kate M O'Brien, Fiona G Stacey, Flora Tzelepis, Rebecca J Wyse, Kate M Bartlem, Rachel Sutherland, Erica L James, Courtney Barnes, Luke Wolfenden

https://doi.org/10.1002/14651858.CD008552.pub6

2018 May 17

Interventions for increasing fruit and vegetable consumption in children aged five years and under

Review

Rebecca K Hodder, Kate M O'Brien, Fiona G Stacey, Rebecca J Wyse, Tara Clinton‐McHarg, Flora Tzelepis, Erica L James, Kate M Bartlem, Nicole K Nathan, Rachel Sutherland, Emma Robson, Sze Lin Yoong, Luke Wolfenden

https://doi.org/10.1002/14651858.CD008552.pub5

2018 Jan 24

Interventions for increasing fruit and vegetable consumption in children aged five years and under

Review

Rebecca K Hodder, Fiona G Stacey, Kate M O'Brien, Rebecca J Wyse, Tara Clinton‐McHarg, Flora Tzelepis, Erica L James, Kate M Bartlem, Nicole K Nathan, Rachel Sutherland, Emma Robson, Sze Lin Yoong, Luke Wolfenden

https://doi.org/10.1002/14651858.CD008552.pub4

2017 Sep 25

Interventions for increasing fruit and vegetable consumption in children aged five years and under

Review

Rebecca K Hodder, Fiona G Stacey, Rebecca J Wyse, Kate M O'Brien, Tara Clinton‐McHarg, Flora Tzelepis, Nicole K Nathan, Erica L James, Kate M Bartlem, Rachel Sutherland, Emma Robson, Sze Lin Yoong, Luke Wolfenden

https://doi.org/10.1002/14651858.CD008552.pub3

2012 Nov 14

Interventions for increasing fruit and vegetable consumption in children aged 5 years and under

Review

Luke Wolfenden, Rebecca J Wyse, Ben I Britton, Karen J Campbell, Rebecca K Hodder, Fiona G Stacey, Patrick McElduff, Erica L James

https://doi.org/10.1002/14651858.CD008552.pub2

2010 Jun 16

Interventions for increasing fruit and vegetable consumption in preschool aged children

Protocol

Luke Wolfenden, Rebecca J Wyse, Ben I Britton, Karen J Campbell, Rebecca K Hodder, Fiona G Stacey, Patrick McElduff, Erica L James

https://doi.org/10.1002/14651858.CD008552

Differences between protocol and review

  • Consistent with the original review (Wolfenden 2012), we excluded trials if fruit or vegetable intake was not the primary trial outcome, to avoid potential confounding effects of other interventions and reduce the risk of publication bias and selective outcome reporting which is more predominate among secondary trial outcomes (or outcomes that were not otherwise stated). This included trials where fruit and vegetable outcomes were assessed within broader targeted interventions. The protocol stated that trials listing fruit and vegetable intake as a secondary trial outcome would also be included. We included trials that did not state a primary outcome, but did report intake of fruit or vegetables or both. We conducted sensitivity analyses to explore the impact on the overall assessment of treatment effects, excluding studies that did not state a primary outcome of children's fruit and vegetable consumption.

  • Consistent with the original review (Wolfenden 2012), we amended classification of intervention effects as 'short‐term' from 'three to less than 12 months' in the protocol to less than 12 months in the review.

  • Consistent with the original review (Wolfenden 2012), we did not contact professional associations as part of the review search strategy, nor did we search the National Institute of Health Randomized Trial Records Database.

  • Consistent with the original review (Wolfenden 2012), we amended the title and text throughout the review to ensure consistent terminology for the description of age. Specifically, we replaced the age description of children as 'preschool' with a more precise description of 'children aged five years and under', to more accurately reflect the scope of the review. We refer only to preschools when discussing the findings of trials conducted in that setting.

  • Consistent with the original review (Wolfenden 2012), as some trials included children across a range of ages, we included any trial where the mean age of the sample at baseline was five years or under.

  • For the review update, while two independent reviewers extracted data from each study, the extraction was undertaken by pairs of reviewers.

  • For the review update, risk of bias was assessed on published study information and authors of included studies were not contacted to clarify any aspects.

  • For the review update, we did not conduct planned subgroup analyses by interventions of varying intensities, due to insufficient information being reported across the included studies about the number and duration of intervention contacts or components.

  • For the review update, while articles were screened independently against all pre‐specified eligibility criteria by two reviewers, this was not conducted in a sequential manner (that is by order: participants, outcome, comparator, intervention, study type) as adopted in the original review.

  • Whilst not explicitly excluded from the original review, for the review update we specifically considered cross‐over trials to be an eligible study design. This was due to the many trials that adopt this design to investigate the effectiveness of interventions to increase the fruit and vegetable consumption of children aged five years and under, and the review authors deeming the study design to be appropriate in this context.

  • This update includes some new methods relevant for living systematic reviews, which are included in the Methods and also described in Appendix 3

Keywords

MeSH

PICO

Population
Intervention
Comparison
Outcome

El uso y la enseñanza del modelo PICO están muy extendidos en el ámbito de la atención sanitaria basada en la evidencia para formular preguntas y estrategias de búsqueda y para caracterizar estudios o metanálisis clínicos. PICO son las siglas en inglés de cuatro posibles componentes de una pregunta de investigación: paciente, población o problema; intervención; comparación; desenlace (outcome).

Para saber más sobre el uso del modelo PICO, puede consultar el Manual Cochrane.

Study flow diagram.
Figuras y tablas -
Figure 1

Study flow diagram.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 2

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 3

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

Funnel plot of comparison: 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention on child consumption of target fruit or vegetable, outcome: 1.1 Fruit and/or vegetable intake.
Figuras y tablas -
Figure 4

Funnel plot of comparison: 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention on child consumption of target fruit or vegetable, outcome: 1.1 Fruit and/or vegetable intake.

Funnel plot of comparison: 3 Short‐term impact (< 12 months) of parent nutrition education intervention versus usual care., outcome: 3.1 Fruit and/or vegetable intake.
Figuras y tablas -
Figure 5

Funnel plot of comparison: 3 Short‐term impact (< 12 months) of parent nutrition education intervention versus usual care., outcome: 3.1 Fruit and/or vegetable intake.

Funnel plot of comparison: 4 Short‐term impact (< 12 months) of multicomponent intervention versus usual care, outcome: 4.1 Fruit and/or vegetable intake.
Figuras y tablas -
Figure 6

Funnel plot of comparison: 4 Short‐term impact (< 12 months) of multicomponent intervention versus usual care, outcome: 4.1 Fruit and/or vegetable intake.

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 1 Vegetable intake.
Figuras y tablas -
Analysis 1.1

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 1 Vegetable intake.

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 2 Vegetable intake ‐ sensitivity analysis ‐ risk of bias.
Figuras y tablas -
Analysis 1.2

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 2 Vegetable intake ‐ sensitivity analysis ‐ risk of bias.

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 3 Vegetable intake ‐ sensitivity analysis ‐ primary outcome.
Figuras y tablas -
Analysis 1.3

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 3 Vegetable intake ‐ sensitivity analysis ‐ primary outcome.

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 4 Vegetable intake ‐ sensitivity analysis ‐ missing data.
Figuras y tablas -
Analysis 1.4

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 4 Vegetable intake ‐ sensitivity analysis ‐ missing data.

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 5 Vegetable intake ‐ subgroup analysis ‐ modality.
Figuras y tablas -
Analysis 1.5

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 5 Vegetable intake ‐ subgroup analysis ‐ modality.

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 6 Vegetable intake ‐ subgroup analysis ‐ setting.
Figuras y tablas -
Analysis 1.6

Comparison 1 Short‐term impact (< 12 months) of child feeding intervention versus no intervention, Outcome 6 Vegetable intake ‐ subgroup analysis ‐ setting.

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 1 Fruit and vegetable intake.
Figuras y tablas -
Analysis 2.1

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 1 Fruit and vegetable intake.

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 2 Fruit and vegetable intake ‐ sensitivity analysis ‐ primary outcome.
Figuras y tablas -
Analysis 2.2

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 2 Fruit and vegetable intake ‐ sensitivity analysis ‐ primary outcome.

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 3 Fruit and vegetable intake ‐ sensitivity analysis ‐ missing data.
Figuras y tablas -
Analysis 2.3

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 3 Fruit and vegetable intake ‐ sensitivity analysis ‐ missing data.

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 4 Fruit and vegetable intake ‐ subgroup analysis ‐ modality.
Figuras y tablas -
Analysis 2.4

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 4 Fruit and vegetable intake ‐ subgroup analysis ‐ modality.

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 5 Fruit and vegetable intake ‐ subgroup analysis ‐ setting.
Figuras y tablas -
Analysis 2.5

Comparison 2 Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention, Outcome 5 Fruit and vegetable intake ‐ subgroup analysis ‐ setting.

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 1 Fruit and vegetable intake.
Figuras y tablas -
Analysis 3.1

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 1 Fruit and vegetable intake.

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 2 Fruit and vegetable intake ‐ sensitivity analysis ‐ primary outcome.
Figuras y tablas -
Analysis 3.2

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 2 Fruit and vegetable intake ‐ sensitivity analysis ‐ primary outcome.

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 3 Fruit and vegetable intake ‐ sensitivity analysis ‐ missing data.
Figuras y tablas -
Analysis 3.3

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 3 Fruit and vegetable intake ‐ sensitivity analysis ‐ missing data.

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 4 Fruit and vegetable intake ‐ subgroup analysis ‐ setting.
Figuras y tablas -
Analysis 3.4

Comparison 3 Short‐term impact (< 12 months) of multicomponent intervention versus no intervention, Outcome 4 Fruit and vegetable intake ‐ subgroup analysis ‐ setting.

Summary of findings for the main comparison. Child feeding interventions compared to no intervention for children aged five years and under

Child feeding interventions compared to no intervention for children aged 5 years and under

Patient or population: children aged 5 years and under
Setting: Various: Preschool (n = 2), School (n = 1), Home + Lab (n = 2), Child health clinic (n = 1), Home (n = 4), Home + health facility (n = 1)
Intervention: Child‐feeding interventions
Comparison: no intervention

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with no intervention

Risk with Child feeding interventions

Short‐term impact (< 12 months) child vegetable intake

The mean vegetable intake was 7.7 grams1

The mean vegetable intake (grams) in the intervention group was 4.03 higher (1.59 higher to 6.47 higher)

1509
(11 RCTs)

⊕⊝⊝⊝
VERY LOW 2, 3, 4

Scores estimated using a standardised mean difference of 0.38 (0.15 to 0.61) and a standard deviation of 10.61.1

The mean duration of follow up post‐intervention for studies included in the meta‐analysis was 4.6 weeks.

2 studies that compared 1 or more child‐feeding practice interventions to a no‐treatment control could not be synthesised in meta‐analysis; both reported a significant increase in fruit or vegetables or both

Short‐term impact (< 12 months) cost effectiveness ‐ not reported

No child feeding interventions reported this outcome

Short‐term impact (< 12 months) unintended adverse events

One trial (Spill 2011a) reported no adverse effects on amount of meal consumed

39
(1 RCT)

⊕⊝⊝⊝
VERY LOW 5, 6, 7

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI)

CI: Confidence interval

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1We used the post‐intervention mean and standard deviation of the control group from Wardle 2003a for the risk with no intervention and to re‐express the SMD in terms of grams of intake.
2Downgraded one level for unexplained heterogeneity: Analysis 1.1 (main analysis): I2 = 73%; Analysis 1.2 (excluding studies at high risk of bias): I2 = 14%; Analysis 1.3 (excluding studies that did not state primary outcome): I2 = 76%; Analysis 1.4 (excluding studies with high attrition and no ITT analysis) I2 = 27%; Analysis 1.5 (subgroup analysis of face‐to‐face studies) I2 = 77%).
3Downgraded one level for risk of bias: Fewer than half of the included studies were rated at low risk of bias for 3 of 4 criteria.
4Downgraded one level for high probability of publication bias: Most included studies were not combined in meta‐analysis.
5Downgraded one level for risk of bias: assessed as high risk of bias for number of domains.
6Downgraded one level for imprecision: total sample size was < 400.
7Downgraded one level for high probability of publication bias: no other studies reported assessing adverse events, so selective reporting suspected.

Figuras y tablas -
Summary of findings for the main comparison. Child feeding interventions compared to no intervention for children aged five years and under
Summary of findings 2. Parent nutrition education interventions compared to no intervention for children aged five years and under

Parent nutrition education interventions compared to no intervention for children aged 5 years and under

Patient or population: children aged 5 years and under
Setting: Various: Parenting group (n = 1), Home (n = 4), Primary care clinic (n = 1), Community health centre (n = 1), Preschool (n = 2), Preschool + home (n = 1)
Intervention: Parent nutrition education interventions
Comparison: no intervention

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with no intervention

Risk with Parent nutrition education interventions

Short‐term impact (< 12 months) child fruit and vegetable intake

The mean serves of vegetables per day was 1.61

The mean serves of vegetables per day in the intervention group was 0.11 higher (0.05 lower to 0.28 higher)

3023
(10 RCTs)

⊕⊝⊝⊝
VERY LOW 2, 3, 4

Scores estimated using a standardised mean difference of 0.11 (‐0.05 to 0.28) and a standard deviation of 1.01

The mean duration of follow up post‐intervention for studies included in the meta‐analysis was 9.8 weeks.

1 trial could not be pooled in the meta‐analysis; it found an intervention targeting parent responsivity and behaviour management to be effective in increasing total fruit intake compared to control

Short‐term impact (< 12 months) cost effectiveness

Information regarding intervention costs was reported in 1 trial (Campbell 2013)

389
(1 RCT)

⊕⊝⊝⊝
VERY LOW 5, 6, 7

Short‐term impact (< 12 months) unintended adverse events

One trial (Wyse 2012) reported no adverse effect on family food expenditure

343
(1 RCT)

⊕⊝⊝⊝
VERY LOW 5, 6, 8

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1We used the post‐intervention mean and standard deviation of the control group from Skouteris 2015 for the risk with no intervention and to re‐express the SMD in terms of serves of vegetables per day.
2Downgraded one level for unexplained heterogeneity: Analysis 2.1 (main analysis): I2 = 72%; Analysis 2.2 (excluding studies that did not state primary aim): I2 = 52%; Analysis 2.3 (excluding studies with high attrition and no ITT analysis): I2 = 48%; Analysis 2.3 (subgroup analysis face‐to‐face studies): I2 = 78%.
3Downgraded one level for risk of bias: Most studies were at high risk of bias for lack of blinding, and fewer than half were at low risk of bias for other methodological limitations.
4Downgraded one level for imprecision: the confidence intervals contained the null value.
5Downgraded one level for risk of bias: study assessed as high risk of bias for number of domains.
6Downgraded one level for imprecision: total sample size was < 400.
7 Downgraded one level for high probability of publication bias: no other studies reported cost effectiveness, so selective reporting suspected.
8 Downgraded one level for high probability of publication bias: no other studies reported assessing adverse events, so selective reporting suspected.

Figuras y tablas -
Summary of findings 2. Parent nutrition education interventions compared to no intervention for children aged five years and under
Summary of findings 3. Multicomponent interventions compared to no intervention for children aged five years and under

Multicomponent interventions compared to no intervention for children aged 5 years and under

Patient or population: children aged 5 years and under
Setting: Various: Preschool (n = 2), school (n = 1), preschool + home (n = 1)
Intervention: Multicomponent interventions
Comparison: no intervention

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with no intervention

Risk with Multicomponent interventions

Short‐term impact (< 12 months) child fruit and vegetable intake

The mean cups of vegetables per day was 1.081

The mean cups of vegetables per day in the intervention group was 0.29 higher (0.06 lower to 0.66 higher)

1861
(4 RCTs)

⊕⊝⊝⊝
VERY LOW 2, 3, 4

Scores estimated using a standardised mean difference of 0.28 (‐0.06 to 0.63) and a standard deviation of 1.051

The mean duration of follow up post‐intervention for studies included in the meta‐analysis was 1.3 weeks.

4 studies could not be pooled in meta‐analysis. 3 reported significant increases in both fruit and vegetable consumption, and 1 significantly increased fruit but not vegetable consumption

Short‐term impact (< 12 months) cost effectiveness ‐ not reported

No studies reported this outcome

Short‐term impact (< 12 months) unintended adverse events ‐ not reported

No studies reported this outcome

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1We used the post‐intervention mean and standard deviation of the control group from Williams 2014 for the risk with no intervention and to re‐express the SMD in terms of cups vegetables per day.
2Downgraded one level for unexplained heterogeneity: Analysis 3.1 (main analysis): I2 = 79%; Analysis 3.2 (excluding studies that did not state primary outcome): I2 = 86%; Analysis 3.3 (excluding studies with high attrition that did not undertake ITT analysis): I2 = 0%.
3Downgraded one level for risk of bias: fewer than half of the included studies were rated at low risk of bias for 2 of 4 criteria.
4Downgraded one level for imprecision: the confidence intervals contained the null value.

Figuras y tablas -
Summary of findings 3. Multicomponent interventions compared to no intervention for children aged five years and under
Summary of findings 4. Child nutrition education interventions compared to no intervention for children aged five years and under

Child nutrition education interventions compared to no intervention for children aged 5 years and under

Patient or population: children aged 5 years and under
Setting: Preschool
Intervention: Child nutrition education interventions
Comparison: no intervention

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with no intervention

Risk with Child nutrition education interventions

Short‐term impact (< 12 months) child fruit and vegetable intake

The mean short‐term impact (< 12 months) child vegetable intake frequency score was 4 (a score of 4 corresponds to consumption of vegetables 3 ‐ 4 times per week)

MD 0

238
(1 RCT)

⊕⊕⊝⊝
LOW 1 2

The only study (Baskale 2011) reported an increase in some of the fruits and vegetables assessed in the intervention group and no significant differences in the control group

The duration of follow up post‐intervention was 8 weeks.

Cost or cost effectiveness ‐ not reported

No studies reported this outcome

Unintended adverse events ‐ not reported

No studies reported this outcome

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1Downgraded one level for risk of bias: high risk of bias due to lack of blinding and loss to follow‐up.
2Downgraded one level for imprecision: total sample size < 400.

Figuras y tablas -
Summary of findings 4. Child nutrition education interventions compared to no intervention for children aged five years and under
Comparison 1. Short‐term impact (< 12 months) of child feeding intervention versus no intervention

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Vegetable intake Show forest plot

11

1509

Std. Mean Difference (Random, 95% CI)

0.38 [0.15, 0.61]

2 Vegetable intake ‐ sensitivity analysis ‐ risk of bias Show forest plot

11

1509

Std. Mean Difference (Random, 95% CI)

0.38 [0.15, 0.61]

2.1 Low/unclear risk of bias

5

487

Std. Mean Difference (Random, 95% CI)

0.23 [0.03, 0.44]

2.2 High risk of bias

6

1022

Std. Mean Difference (Random, 95% CI)

0.48 [0.08, 0.87]

3 Vegetable intake ‐ sensitivity analysis ‐ primary outcome Show forest plot

11

1509

Std. Mean Difference (Random, 95% CI)

0.38 [0.15, 0.61]

3.1 Primary outcome of child fruit or vegetable intake

9

1228

Std. Mean Difference (Random, 95% CI)

0.47 [0.19, 0.76]

3.2 Primary outcome unclear

2

281

Std. Mean Difference (Random, 95% CI)

0.07 [‐0.17, 0.30]

4 Vegetable intake ‐ sensitivity analysis ‐ missing data Show forest plot

11

1509

Std. Mean Difference (Random, 95% CI)

0.38 [0.15, 0.61]

4.1 Low attrition or high attrition with ITT analysis

8

757

Std. Mean Difference (Random, 95% CI)

0.29 [0.10, 0.48]

4.2 High attrition and no ITT analysis

3

752

Std. Mean Difference (Random, 95% CI)

0.55 [‐0.16, 1.27]

5 Vegetable intake ‐ subgroup analysis ‐ modality Show forest plot

11

1509

Std. Mean Difference (Random, 95% CI)

0.38 [0.15, 0.61]

5.1 Face‐to‐face

9

1328

Std. Mean Difference (Random, 95% CI)

0.38 [0.10, 0.65]

5.2 Other modality

2

181

Std. Mean Difference (Random, 95% CI)

0.36 [0.06, 0.66]

6 Vegetable intake ‐ subgroup analysis ‐ setting Show forest plot

11

1509

Std. Mean Difference (Random, 95% CI)

0.38 [0.15, 0.61]

6.1 School or preschool

3

341

Std. Mean Difference (Random, 95% CI)

0.18 [‐0.12, 0.47]

6.2 Home

4

474

Std. Mean Difference (Random, 95% CI)

0.56 [0.18, 0.95]

6.3 Home + Lab

2

40

Std. Mean Difference (Random, 95% CI)

0.74 [0.09, 1.39]

6.4 Other settings

2

654

Std. Mean Difference (Random, 95% CI)

0.11 [‐0.14, 0.36]

Figuras y tablas -
Comparison 1. Short‐term impact (< 12 months) of child feeding intervention versus no intervention
Comparison 2. Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Fruit and vegetable intake Show forest plot

10

3023

Std. Mean Difference (Random, 95% CI)

0.11 [‐0.05, 0.28]

2 Fruit and vegetable intake ‐ sensitivity analysis ‐ primary outcome Show forest plot

10

3023

Std. Mean Difference (Random, 95% CI)

0.11 [‐0.05, 0.28]

2.1 Primary outcome of child fruit or vegetable intake

7

2737

Std. Mean Difference (Random, 95% CI)

0.03 [‐0.10, 0.15]

2.2 Primary outcome unclear

3

286

Std. Mean Difference (Random, 95% CI)

0.52 [0.03, 1.00]

3 Fruit and vegetable intake ‐ sensitivity analysis ‐ missing data Show forest plot

10

3023

Std. Mean Difference (Random, 95% CI)

0.11 [‐0.05, 0.28]

3.1 Low attrition or high attrition with ITT analysis

6

2463

Std. Mean Difference (Random, 95% CI)

0.11 [‐0.02, 0.24]

3.2 High attrition and no ITT analysis

4

560

Std. Mean Difference (Random, 95% CI)

0.07 [‐0.45, 0.59]

4 Fruit and vegetable intake ‐ subgroup analysis ‐ modality Show forest plot

10

3023

Std. Mean Difference (Random, 95% CI)

0.11 [‐0.05, 0.28]

4.1 Face‐to‐face only

5

826

Std. Mean Difference (Random, 95% CI)

0.12 [‐0.20, 0.45]

4.2 Audio visual only

2

386

Std. Mean Difference (Random, 95% CI)

0.40 [‐0.04, 0.85]

4.3 Other modality

3

1811

Std. Mean Difference (Random, 95% CI)

‐0.00 [‐0.22, 0.21]

5 Fruit and vegetable intake ‐ subgroup analysis ‐ setting Show forest plot

10

3023

Std. Mean Difference (Random, 95% CI)

0.11 [‐0.05, 0.28]

5.1 Home

5

2047

Std. Mean Difference (Random, 95% CI)

0.06 [‐0.16, 0.27]

5.2 Preschool

2

243

Std. Mean Difference (Random, 95% CI)

0.43 [‐0.27, 1.13]

5.3 Other settings

3

733

Std. Mean Difference (Random, 95% CI)

0.06 [‐0.14, 0.26]

Figuras y tablas -
Comparison 2. Short‐term impact (< 12 months) of parent nutrition education intervention versus no intervention
Comparison 3. Short‐term impact (< 12 months) of multicomponent intervention versus no intervention

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Fruit and vegetable intake Show forest plot

4

1861

Std. Mean Difference (Random, 95% CI)

0.28 [‐0.06, 0.63]

2 Fruit and vegetable intake ‐ sensitivity analysis ‐ primary outcome Show forest plot

4

1861

Std. Mean Difference (Random, 95% CI)

0.28 [‐0.06, 0.63]

2.1 Primary outcome of child fruit or vegetable intake

3

1167

Std. Mean Difference (Random, 95% CI)

0.38 [‐0.20, 0.95]

2.2 Primary outcome unclear

1

694

Std. Mean Difference (Random, 95% CI)

0.12 [‐0.13, 0.38]

3 Fruit and vegetable intake ‐ sensitivity analysis ‐ missing data Show forest plot

4

1861

Std. Mean Difference (Random, 95% CI)

0.28 [‐0.06, 0.63]

3.1 Low attrition or high attrition with ITT analysis

2

265

Std. Mean Difference (Random, 95% CI)

0.70 [0.39, 1.01]

3.2 High attrition and no ITT analysis

2

1596

Std. Mean Difference (Random, 95% CI)

0.06 [‐0.08, 0.20]

4 Fruit and vegetable intake ‐ subgroup analysis ‐ setting Show forest plot

4

1861

Std. Mean Difference (Random, 95% CI)

0.28 [‐0.06, 0.63]

4.1 School or preschool

3

1608

Std. Mean Difference (Random, 95% CI)

0.07 [‐0.07, 0.20]

4.2 Other settings

1

253

Std. Mean Difference (Random, 95% CI)

0.72 [0.40, 1.04]

Figuras y tablas -
Comparison 3. Short‐term impact (< 12 months) of multicomponent intervention versus no intervention