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From a single\nfunction call it produces a structured validation report in\nHypertext Markup Language (HTML) and JavaScript Object Notation\n(JSON) covering concept coverage, cohort attrition, temporal\ndata density, and covariate feasibility against a comparator.\nThe checks are aligned with the United States Food and Drug\nAdministration (FDA) guidance on real-world data and evidence,\nFDA (2023) , the\nHarmonized Protocol Template to Enhance Reproducibility\n(HARPER), Wang and others (2022) , and\nthe Reporting of Studies Conducted Using Observational\nRoutinely-Collected Data for Pharmacoepidemiology (RECORD-PE)\nstatement, Langan and others (2018) . 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