Trial reportPublic health nutrition2016
Effect of African leafy vegetables on the micronutrient status of mildly deficient farm-school children in South Africa: a randomized controlled study.
Trial report in Public health nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 5 of them syntheses that pooled it.
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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.
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Who cites it
10 citing papers in PubMed, 5 syntheses or guidelines pooled it, 32 citations in OpenAlex.
- Biochemical assessment of the nutritional status of infants, children and adolescents in South Africa (1997-2022): a systematic review.Public health nutrition · 2024Pooled it
- How do publicly procured school meals programmes in sub-Saharan Africa improve nutritional outcomes for children and adolescents: a mixed-methods systematic review.Public health nutrition · 2024Pooled it
- Effect of Amaranth-Containing Dietary Intervention in Improving Hemoglobin Concentration: A Systematic Review and Meta-Analysis.Public health reviews · 2024Pooled it
- Impacts of school feeding on educational and health outcomes of school-age children and adolescents in low- and middle-income countries: A systematic review and meta-analysis.Journal of global health · 2021Pooled it
- Effectiveness of school-based nutrition interventions in sub-Saharan Africa: a systematic review.Public health nutrition · 2020Pooled it
- Iron status at early pregnancy is associated with infectious respiratory and gastric illness in women receiving routine iron supplementation: the NuPED prospective cohort.BMC pregnancy and childbirth · 2025Article
- Prevalence and associated risk factors of stunting, wasting/thinness, and underweight among primary school children in Kandahar City, Afghanistan: a cross-sectional analytical study.BMC public health · 2024Article
- Nutritional status of school-age children and adolescents in low- and middle-income countries across seven global regions: a synthesis of scoping reviews.Public health nutrition · 2023Review
- Fruit and vegetable consumption and serum vitamin A in lactating women: A cross-sectional survey in urban China.Food science & nutrition · 2021Article
- Associations of dietary diversity with anaemia and iron status among 5- to 12-year-old schoolchildren in South Africa.Public health nutrition · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveA randomized controlled trial was conducted to assess the effect of African leafy vegetable (ALV) consumption on Fe, Zn and vitamin A status in children.
designChildren were randomly allocated to receive either a 300 g cooked ALV dish and school meal starch (n 86) or the normal school meal (n 81) five times per week for three months. ALV in the dish consisted mainly of Amaranthus cruentus (at least 80 %) and the remainder of Cleome gynandra, Cucurbita maxima or Vigna unguiculata. Nutrient content and consumer acceptance of the ALV dish were also determined.
settingNorth West Province, South Africa. SUBJECTS: Grade R to grade 4 children (6-12 years old) of two farm schools.
resultsThe ALV dish contributed 11·6-15·8 mg Fe and 1·4-3·7 mg Zn. At baseline, prevalence of deficiencies in the intervention group was 16·0 %, 16·3 %, 7·0 % and 75·6 %, respectively, for anaemia (Hb<11·5 g/dl), Fe (serum ferritin<15 µg/l), vitamin A (serum retinol<20 μg/dl) and Zn (serum Zn<65 μg/dl); and in the control group 10·5 %, 18·5 %, 2·5 % and 75·3 %, respectively. No significant estimated intervention effect was found.
conclusionsThis randomized controlled trial showed that ALV were unable to improve serum retinol, serum ferritin or Hb if there are only mild deficiencies present. Furthermore, despite the low Zn status in the study population, ALV consumption did not improve serum Zn concentrations either.
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