A collaborative approach to developing an electronic health record phenotyping algorithm for drug-induced liver injury

Casey Lynnette Overby, Jyotishman Pathak, Omri Gottesman, Krystl Haerian, Adler Perotte, Sean Murphy, Kevin Bruce, Stephanie Johnson, Jayant Talwalkar, Yufeng Shen, Steve Ellis, Iftikhar Kullo, Christopher Chute, Carol Friedman, Erwin Bottinger, George Hripcsak, Chunhua Weng

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Objective To describe a collaborative approach for developing an electronic health record (EHR) phenotyping algorithm for drug-induced liver injury (DILI). Methods We analyzed types and causes of differences in DILI case definitions provided by two institutions- Columbia University and Mayo Clinic; harmonized two EHR phenotyping algorithms; and assessed the performance, measured by sensitivity, specificity, positive predictive value, and negative predictive value, of the resulting algorithm at three institutions except that sensitivity was measured only at Columbia University. Results Although these sites had the same case definition, their phenotyping methods differed by selection of liver injury diagnoses, inclusion of drugs cited in DILI cases, laboratory tests assessed, laboratory thresholds for liver injury, exclusion criteria, and approaches to validating phenotypes. We reached consensus on a DILI phenotyping algorithm and implemented it at three institutions. The algorithm was adapted locally to account for differences in populations and data access. Implementations collectively yielded 117 algorithm-selected cases and 23 confirmed true positive cases. Discussion Phenotyping for rare conditions benefits significantly from pooling data across institutions. Despite the heterogeneity of EHRs and varied algorithm implementations, we demonstrated the portability of this algorithm across three institutions. The performance of this algorithm for identifying DILI was comparable with other computerized approaches to identify adverse drug events. Conclusions Phenotyping algorithms developed for rare and complex conditions are likely to require adaptive implementation at multiple institutions. Better approaches are also needed to share algorithms. Early agreement on goals, data sources, and validation methods may improve the portability of the algorithms.

Original languageEnglish (US)
Pages (from-to)e243-e252
JournalJournal of the American Medical Informatics Association
Volume20
Issue numberE2
DOIs
StatePublished - 2013

ASJC Scopus subject areas

  • Health Informatics

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