Evidence map›Paper›PMID 24999785›Full record

Trial reportPublic health nutrition2015

Adherence in a pragmatic randomized controlled trial on prophylactic iron supplementation during pregnancy in Maputo, Mozambique.

Bright I Nwaru, Graça Salomé, Fatima Abacassamo, Orvalho Augusto, Julie Cliff, Cesar Sousa, Elena Regushevskaya, Saara Parkkali, Elina Hemminki

Abstract readMulticenter StudyPragmatic Clinical TrialRandomized Controlled Trial
In one paragraph

Trial report in Public health nutrition, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 4 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

11 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Daily oral iron supplementation during pregnancy.The Cochrane database of systematic reviews · 2024
    Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. Article
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  11. Observational
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Bright I Nwaru1Centre for Population Health Sciences,The University of Edinburgh,Medical School, Doorway 3,Teviot Place,Edinburgh EH8 9AG,UK.
Graça Salomé3Department of Physiological Sciences,Eduardo Mondlane University,Maputo,Mozambique.
Fatima Abacassamo4Department of Community Health,Eduardo Mondlane University,Maputo,Mozambique.
Orvalho Augusto4Department of Community Health,Eduardo Mondlane University,Maputo,Mozambique.
Julie Cliff4Department of Community Health,Eduardo Mondlane University,Maputo,Mozambique.
Cesar Sousa4Department of Community Health,Eduardo Mondlane University,Maputo,Mozambique.
Elena Regushevskaya5National Institute for Health and Welfare,Health Services and Policy Research,Helsinki,Finland.
Saara Parkkali5National Institute for Health and Welfare,Health Services and Policy Research,Helsinki,Finland.
Elina Hemminki5National Institute for Health and Welfare,Health Services and Policy Research,Helsinki,Finland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAssessing the level of adherence and its determinants is important in appraising the overall effectiveness of trials. The present study aimed to evaluate the extent of adherence and its determinants in a pragmatic randomized controlled trial of Fe prophylaxis during pregnancy in Maputo, Mozambique.

designA pragmatic randomized controlled trial.

settingTwo health centres (1° de Maio and Machava) in Maputo, Mozambique. SUBJECTS: Pregnant women (≥12 weeks' gestation, ≥18 years old, non-high-risk pregnancy; n 4326) attending prenatal care consultations at two health centres were randomized to receive routine Fe (n 2184; 60 mg ferrous sulfate plus 400 μg folic acid daily throughout pregnancy) or selective Fe (n 2142; screening and treatment for anaemia and daily intake of 1 mg folic acid).

resultsThe level of adherence was 79% for having two or more visits, 53% for adequate prenatal care and 67% for complete intake of Fe/folic acid tablets during the trial. The correlation between the adherence measures ranged between 0·151 and 0·739. Adherence did not differ by trial arm, but there were centre differences in adequate prenatal visits and intake of tablets. Older women (>20 years) and those with a history of abortion were more likely to achieve greater adherence, whereas an increased number of previous births decreased the likelihood of adherence. HIV positivity decreased the likelihood of adherence in one trial centre and increased it in the other.

conclusionsThe variation in adherence by trial centre, women's characteristics and outcome measures suggests that adherence in trials fully depends on participants' behaviour and can be increased by paying attention to contextual factors.

Indexed as

Dietary SupplementsPatient CompliancePrenatal Nutritional Physiological PhenomenaAdolescentAdultAnemia, Iron-DeficiencyCommunity Health CentersDeveloping CountriesFemaleFerrous CompoundsFolic AcidHematinicsHIV SeropositivityHumansIron, DietaryMozambiqueFerrous Compoundsferrous sulfateFolic AcidHematinicsIron, DietaryMozambique

Identifiers

PMID24999785
PMCPMC10271523

What OpenQuestion holds

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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.