Diabetics can be identified in an electronic medical record using laboratory tests and prescriptions

Journal of Clinical Epidemiology
Karen TuHelen Guo

Abstract

With the increasing use of electronic medical records (EMRs) comes the potential to efficiently evaluate and improve quality of care. We set out to determine if diabetics could be accurately identified using structured data contained within an EMR. We used a 5% random sample of adult patients (969 patients) within a convenience sample of 17 primary care physicians using Practices Solutions EMR in Ontario. A reference standard of diabetes status was manually confirmed by reviewing each patient's record. Accuracy for identifying people with diabetes was assessed using various combinations of laboratory tests and prescriptions. EMR data was also compared with administrative data. A rule of one elevated blood sugar or a prescription for an antidiabetic medication had a 83.1% sensitivity, 98.2% specificity, 80.0% positive predictive value (PPV) and 98.5% negative predictive value (NPV) compared with the reference standard of diabetes status. We found that the use of structured data within an EMR could be used to identify patients with diabetes. Our results have positive implications for policy makers, researchers, and clinicians as they develop registries of diabetic patients to examine quality of care using EMR data.

Citations

Jun 21, 2014·Multiple Sclerosis : Clinical and Laboratory Research·Kristen M KryskoKaren Tu
Sep 6, 2013·American Journal of Medical Quality : the Official Journal of the American College of Medical Quality·Annemarie Gregory Hirsch, Ann Scheck McAlearney
May 4, 2018·BMC Health Services Research·Lorraine L LipscombeKaren Tu
Dec 21, 2016·Arthritis Care & Research·Jessica WiddifieldKaren Tu
Nov 16, 2021·The Journal of Spinal Cord Medicine·John ShepherdSusan Jaglal

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