Search reports, ask a question, or jump to a page.
The problem
Intervention: Nutritional assessment and monitoring as a predictor of cognitive outcomes; the study evaluates nutrition's role in cognitive function rather than a specific nutrition intervention
Who it was tested with: 614 children aged 8-17: 336 with HIV, 209 HIV-exposed uninfected, 69 HIV-unexposed uninfected controls from Lusaka, Zambia.
Children or communities are compared with a group that did not receive the intervention, or followed over years. This is the design that best separates what the intervention did from everything else that changed.
"children aged 8-17 with HIV and HIV-exposed uninfected (HEU) or HIV-unexposed uninfected (HUU) controls were recruited from the Pediatric Center for Excellence in Lusaka, Zambia and completed quarterly follow-up visits over an average of 4 years, during which cognitive (e.g., Neuropsychological Z-score battery and the Global Deficit Score), and nutritional (e.g., number of meals per week, height percentile)" measures were assessed. This prospective cohort design with longitudinal follow-up and multiple comparison groups provides stronger evidence than cross-sectional studies, though it remains observational rather than interventional.
Observational design cannot establish causality. The study identifies nutritional predictors of cognition but does not evaluate the effectiveness of a nutrition intervention trial. Findings may be specific to the urban Zambian setting.
Across countries and designs
1 study · 1 country
