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. 2020 Feb 15;16(2):175–183. doi: 10.5664/jcsm.8160

Figure 2. Performance characteristics of primary EHR-based OSA identification algorithm.

Figure 2

Performance characteristics (PPV and NPV) against gold-standard clinical chart review for an EHR-based OSA case definition of two or more ICD-9/ICD-10 diagnostic codes related to OSA is shown overall and at each participating site. CI = confidence interval, EHR = electronic health record, ICD = International Classification of Diseases, KPSC = Kaiser Permanente Southern California, NPV = negative predictive value, OSA = obstructive sleep apnea, Penn = University of Pennsylvania, PPV = positive predictive value.