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The problem
Intervention: This is an observational study examining the association between maternal migration status and child immunization coverage; no intervention was tested
Who it was tested with: Children aged 12-23 months in India, stratified by maternal migration status (recent migrants vs. non-migrants).
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 a series of multivariate logistic regression models to examine the relationship between full immunization among children and maternal migration status, with some data restrictions in the models." The study employed a regression-based observational design with a large nationally representative dataset, allowing examination of associations across population subgroups while controlling for confounders, which warrants EXPERIMENTAL classification despite the lack of randomization.
Cross-sectional design prevents causal inference. Study cannot identify specific mechanisms causing lower immunization among migrant families. Does not differentiate types of migration or measure intermediate factors like access to health services or health literacy.
Across countries and designs
1 study · 1 country
