Effectiveness of agricultural interventions that aim to improve nutritional status of children: systematic review
Interventions include bio-fortification, home gardens, small scale fisheries, dairy development, animal husbandry and poultry development
Abstract
皇冠体育app study selection included studies assessed effects of agricultural interventions aiming at improving the nutritional status of children (bio-fortification, home gardens, small scale fisheries and aquaculture, dairy development, and animal husbandry and poultry development). Only studies that used a valid counterfactual analysis were included. Before/after studies and participants/non-participants comparisons affected by selection bias were excluded.
Results were analysed for 4 intermediate outcomes (programme participation, income, dietary diversity, and micronutrient intake) and one final outcome (prevalence of under-nutrition). Analysis was by summary tables of mean effects and by meta-analysis (for vitamin A absorption).
皇冠体育app review included 23 studies, mostly evaluating home garden interventions. 皇冠体育app studies reviewed did not report participation rates or the characteristics of participants in programmes. 皇冠体育app interventions had a positive effect on the production of the agricultural goods promoted, but not on households鈥� total income. 皇冠体育app interventions were successful in promoting the consumption of food rich in protein and micronutrients, but the effect on the overall diet of poor people remains unclear. No evidence was found of an effect on the absorption of iron, but some evidence exists of a positive effect on absorption of vitamin A. Very little evidence was found of a positive effect on the prevalence of stunting, wasting, and underweight among children aged under 5. 皇冠体育app question posed by the review cannot be answered with any level of confidence. 皇冠体育app data available show a poor effect of these interventions on nutritional status, but methodological weaknesses of the studies cast serious doubts on the validity of these results. More rigorous and better designed studies are needed, as well as the establishment of agreed quality standards to guide researchers in this important area.
皇冠体育appre is a protocol for this systematic review
Citation
Masset, E. Haddad, L., Cornelius, A., and Isaza-Castro, J. Effectiveness of agricultural interventions that aim to improve nutritional status of children: systematic review. British Medical Journal (2012) 344: d8222. [DOI: 10.1136/bmj.d8222]