Skip to main content
. Author manuscript; available in PMC: 2017 Jan 15.
Published in final edited form as: Am J Cardiol. 2015 Nov 6;117(2):221–225. doi: 10.1016/j.amjcard.2015.10.031

Figure 2.

Figure 2

Comparative Algorithm Performance

Comparative algorithm performance on an independent comparison set. Our composite AF algorithms were compared against two previously published AF identification methods and two additional billing-code based methods in terms of both positive predictive value for AF and percent of the cohort captured. Definitions: comparator 1 (>1 outpatient ICD9 code or 1 outpatient ICD9 code + ECG with AF), comparator 2 (≥1 inpatient ICD9 code or ECG with AF), comparator 3 (comparator 1 or comparator 2), comparator 4 (≥1 inpatient ICD9 code or ≥1 outpatient ICD9 code), composite AF Algorithm (our primary AF algorithm), modified AF algorithm (our second AF algorithm). AF – atrial fibrillation. ARIC – Atherosclerosis Risk in Communities. ATRIA – Anticoagulation and Risk factors in Atrial Fibrillation. CHS – Cardiovascular Health Study.