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The problem
Intervention: Longitudinal cohort tracking of girls from childhood through early adulthood with analysis of child marriage occurrence and mental health outcomes
Who it was tested with: Girls followed in Ethiopia, India, Peru, and Vietnam from age 8 to age 29, with 5% to 20% experiencing child marriage or cohabitation.
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.
"We used linear regression, difference-in-differences estimation (DiD), and propensity score matching (PSM) to examine short and longer-term impacts from age 19 to 29." The study employed quasi-experimental methods with longitudinal tracking and statistical controls to estimate causal impacts, allowing comparison of outcomes across different analytical approaches to strengthen inference about the impacts of child marriage on mental health.
Pre-existing disadvantages explained most of the observed difference in life satisfaction; the study cannot isolate the causal effect of marriage alone from confounding factors such as poverty, lack of education, or family circumstances that both precede and accompany child marriage.
Across countries and designs
3 studies · 5 countries
