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. 2014 Feb 28;3(1):e000713. doi: 10.1161/JAHA.113.000713

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© 2014 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Figure 2. — MAO activity in atrial myocardium and incidence of POAF. All rates of MAO activity from entire cohort of patients recruited for this study are shown (1 circle=1 patient). Quartiles of pooled data were generated, and univariable analysis performed with POAF as the outcome variable using Poisson regression. Each quartile is delineated with color shading to illustrate the risk of POAF within that particular quartile (Green=<15%, Yellow=15% to 30%, Orange=30% to 40%, Red=>60%). Within each quartile, POAF incidence=number of patients in that particular quartile experiencing POAF. RR=relative risk, with 95% confidence interval (CI). MAO indicates monoamine oxidase; POAF, post‐operative atrial fibrillation.