Agreement and validity of electronic health record prescribing data relative to pharmacy claims data: A validation study from a US electronic health record database.
Christopher G RowanJames FloryTobias GerhardJohn K CuddebackNikita StempniewiczJames D LewisSean HennessyPublished in: Pharmacoepidemiology and drug safety (2017)
Despite substantial variability among different medications, there was very good agreement between EHR-Rx data and PC-Rx data. To maximize the validity of classifying medication exposure with EHR prescribing data, researchers may consider using longer MEPs (eg, 12 months) and potentially require multiple EHR-Rxs to classify baseline medication exposure.