Do studies evaluating early-life policy interventions fully adhere to the critical conditions of difference-in-differences? A systematic review

Objectives To assess the reporting and methodological quality of early-life policy intervention papers that applied difference-in-differences (DiD) analysis.Study design Systematic review.Data sources Papers applying DiD of early-life policy interventions in high-income countries as identified by searching Medline, Embase and Scopus databases up to

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