Vest, Joshua R.Ellis Hilts, KatyAncker, Jessica S.Unruh, Mark AaronJung, Hye-Young2019-08-062019-08-062019-08-01Vest, J. R., Ellis Hilts, K., Ancker, J. S., Unruh, M. A., & Jung, H.-Y. (n.d.). Usage of query-based health information exchange after event notifications. JAMIA Open. https://doi.org/10.1093/jamiaopen/ooz028https://hdl.handle.net/1805/20221ABSTRACT Objectives: This study sought to quantify the association between event notifications and subsequent querybased health information exchange (HIE) use among end users of three different community health information organizations. Materials and Methods: Using system-log data merged with user characteristics, regression-adjusted estimates were used to describe the association between event notifications and subsequent query-based HIE usage. Results: Approximately 5% of event notifications were associated with query-based HIE usage within 30 days. In adjusted models, odds of query-based HIE usage following an event notification were higher for older patients and for alerts triggered by a discharge event. Query-based HIE usage was more common among specialty clinics and Federally Qualified Health Centers than primary care organizations. Discussion and Conclusion: In this novel combination of data, 1 in 20 event notifications resulted in subsequent query-based HIE usage. Results from this study suggest that event notifications and query-based HIE can be applied together to address clinical and population health use cases.en-USAttribution-NonCommercial 3.0 United Statesclinical information systemshealth information exchangeambulatory care facilitiesArticle