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The problem
Intervention: Statewide alcohol prohibition including ban on production, sales, and consumption
Who it was tested with: Children in Bihar, India whose mothers were exposed to the 2016 prohibition, compared with unexposed children.
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.
"Using representative survey data within a difference-in-differences framework, we find that children of mothers exposed to the prohibition experienced declines of 8.3 % points in stunting and 6.7 % points in underweight." This design compares the same population before and after the policy change, with a comparison group of unexposed areas, allowing estimation of causal effects.
Observational study using difference-in-differences method depends on parallel trends assumption; relies on survey data which may have measurement error; does not clarify implementation fidelity or duration of effects
Across countries and designs
1 study · 1 country
