Inter-observer reproducibility expressed as Lin’s concordance correlation coefficient (CCC) as well as bias and 95% limits of agreement obtained by Bland and Altman analyses regarding end-diastolic and end-systolic left atrial volumes indexed to body weight (LADvol/BW and LASvol/BW, respectively) assessed by different echocardiographic methods (i.e., monoplane and biplane Simpson’s methods of discs (SMOD) and area length methods (ALM)) and left atrium-to-aorta ratios (Observer 2 <i>versus</i> Observer 1).

Inter-observer reproducibility expressed as Lin’s concordance correlation coefficient (CCC) as well as bias and 95% limits of agreement obtained by Bland and Altman analyses regarding end-diastolic and end-systolic left atrial volumes indexed to body weight (LADvol/BW and LASvol/BW, respectively) assessed by different echocardiographic methods (i.e., monoplane and biplane Simpson’s methods of discs (SMOD) and area length methods (ALM)) and left atrium-to-aorta ratios (Observer 2 versus Observer 1).