Trial reportPublic health nutrition2017
Impact of two policy interventions on dietary diversity in Ecuador.
Trial report in Public health nutrition, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 2 of them syntheses that pooled it.
What it found
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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.
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.
Who cites it
4 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Community-level interventions for improving access to food in low- and middle-income countries.The Cochrane database of systematic reviews · 2020Pooled it
- Community-level interventions for improving access to food in low- and middle-income countries.The Cochrane database of systematic reviews · 2020Pooled it
- Policies and interventions addressing child undernutrition in Latin America and the Caribbean: a scoping review.Frontiers in public health · 2026Article
- The impact of Covid-19 on food aid systems in South Africa: a cross-sectional mixed-methods study.Health promotion international · 2025Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo differentiate the effects of food vouchers and training in health and nutrition on consumption and dietary diversity in Ecuador by using an experimental design.
designInterventions involved enrolling three groups of approximately 200 randomly selected households per group in three provinces in Ecuador. Power estimates and sample size were computed using the Optimal Design software, with a power of 80 %, at 5 % of significance and with a minimum detectable effect of 0·25 (sd). The first group was assigned to receive a monthly food voucher of $US 40. The second group was assigned to receive the same $US 40 voucher, plus training on health and nutrition issues. The third group served as the control. Weekly household values of food consumption were converted into energy intake per person per day. A simple proxy indicator was constructed for dietary diversity, based on the Food Consumption Score. Finally, an econometric model with three specifications was used for analysing the differential effect of the interventions.
settingThree provinces in Ecuador, two from the Sierra region (Carchi and Chimborazo) and one from the Coastal region (Santa Elena). SUBJECTS: Members of 773 households randomly selected (n 4343).
resultsNo significant impact on consumption for any of the interventions was found. However, there was evidence that voucher systems had a positive impact on dietary diversity. No differentiated effects were found for the training intervention.
conclusionsThe most cost-effective intervention to improve dietary diversity in Ecuador is the use of vouchers to support family choice in food options.
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