Evidence map›Paper›PMID 35062921›Full record

ArticleBMC public health2022

Evaluating 'Power 4 a Healthy Pregnancy' (P4HP) - protocol for a cluster randomized controlled trial and process evaluation to empower pregnant women towards improved diet quality.

Renske M van Lonkhuijzen, Susanne Cremers, Jeanne H M de Vries, Edith J M Feskens, Annemarie Wagemakers

Erratum issuedAbstract readClinical Trial Protocol
In one paragraph

Article in BMC public health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Pregnant Women's Experiences With a Collaborative Midwife-Dietitian Empowerment Programme to Improve Diet Quality.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2025
    Article
  6. Article
  7. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Renske M van LonkhuijzenHealth and Society, Department of Social Sciences, Wageningen University & Research, Hollandseweg 1, bode 60, 6706KN, Wageningen, The Netherlands. renske.vanlonkhuijzen@wur.nl.ORCID 0000-0002-9073-714X
Susanne CremersHealth and Society, Department of Social Sciences, Wageningen University & Research, Hollandseweg 1, bode 60, 6706KN, Wageningen, The Netherlands.
Jeanne H M de VriesHuman Nutrition & Health, Department of Agrotechnology and Food Sciences, Wageningen University & Research, Stippeneng 4, bode 62, 6708WE, Wageningen, The Netherlands.
Edith J M FeskensHuman Nutrition & Health, Department of Agrotechnology and Food Sciences, Wageningen University & Research, Stippeneng 4, bode 62, 6708WE, Wageningen, The Netherlands.
Annemarie WagemakersHealth and Society, Department of Social Sciences, Wageningen University & Research, Hollandseweg 1, bode 60, 6706KN, Wageningen, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn general during pregnancy, women are aware of the importance of good diet quality, interested in nutrition, and receptive to changing dietary intake. However, adherence to dietary guidelines is sub-optimal. A pregnant woman's first information source regarding nutrition information is her midwife. Healthy nutrition promotion by midwives may therefore be very promising, but midwives face multiple barriers in providing nutritional support. Empowering pregnant women to improve their diet quality is expected to improve their health. Therefore an empowerment intervention has been developed to improve diet quality among pregnant women. The objective of this study is to evaluate the effectiveness and feasibility of Power 4 a Healthy Pregnancy (P4HP). P4HP aims to empower pregnant women to have a healthier diet quality. METHODS/

designThis study applies a mixed methodology consisting of a non-blinded cluster randomized trial with an intervention (P4HP) group and a control group and a process evaluation. Midwifery practices, the clusters, will be randomly allocated to the intervention arm (n = 7) and control arm (n = 7). Participating women are placed in intervention or control conditions based on their midwifery practice. Each midwifery practice includes 25 pregnant women, making 350 participants in total. Health related outcomes, diet quality, empowerment, Sense of Coherence, Quality of Life, and Self-Rated Health of participants will be assessed before (T0) and after (T1) the intervention. The process evaluation focuses on multidisciplinary collaboration, facilitators, and barriers, and consists of in-depth interviews with midwives, dieticians and pregnant women. DISCUSSION: This study is the first to evaluate an empowerment intervention to improve diet quality in this target population. This mixed method evaluation will contribute to knowledge about the effectiveness and feasibility regarding diet quality, empowerment, health-related outcomes, multidisciplinary collaboration, facilitators and barriers of the empowerment intervention P4HP. Results will help inform how to empower pregnant women to achieve improved diet quality by midwives and dieticians. If proven effective, P4HP has the potential to be implemented nationally and scaled up to a long-term trajectory from preconception to the postnatal phase.

trial registrationThe trial is prospectively registered at the Netherlands Trial Register ( NL9551 ). Date registered: 19/05/2021.

Indexed as

MidwiferyPregnancy ComplicationsDietFemaleHumansPregnancyPregnant PeopleQuality of LifeRandomized Controlled Trials as TopicDiet qualityEmpowermentHealth promotionMidwiferyMultidisciplinary collaborationNutritionPregnancyPregnant women

Identifiers

PMID35062921
PMCPMC8780817

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.