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Testing a tool for assessing the risk of bias for nonrandomized studies showed moderate reliability and promising validity

ReliabilityEpidemiologyEngineeringMeta-analysisHealth PolicyModerate ReliabilitySelection BiasBiasClinical TrialsRiskRiskbenefit RatioRandomized Controlled TrialQuasi-experimentResearch EthicsPromising ValidityPublic HealthNonrandomized StudiesSurvey Methodology