Parsons C, et al. - In patients without atrial fibrillation, researchers investigated if adding renal impairment (1 point) to the CHA₂DS₂-VASc score (-R) improves the score's prediction of mortality, thromboembolism, and atrial fibrillation. This study included patients that had an implantable cardiac monitoring device placed between January 1, 2004 and December 31, 2013. Participants were followed through March 7, 2016. In this retrospective analysis using the Rochester Epidemiology Project medical records system, a mild incremental benefit of adding renal impairment to the CHA₂DS₂-VASc score was reflected by an observed improvement in the score's prediction of thromboembolism and mortality in patients without atrial fibrillation.