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Table 2 Statistics on the differences between the various measurements and respiratory states

From: Respiratory influence on left atrial volume calculation with 3D-echocardiography

   Mean bias ± SD Correlation coefficiency 95 % limits of agreement Coefficient of variation
EDV Inspiratory vs. expiratory −1.0 ± 6.0 −0.043 (p = 0.73) −12.79-10.71 9.3 %
Inspiratory vs. free breathing −0.26 ± 7.9 0.038 (p = 0.77) −15.75-15.24 12.2 %
Expiratory vs. free breathing 0.78 ± 8.0 0.071 (p = 0.58) −14.83-16.40 12.2 %
ESV Inspiratory vs. expiratory −1.19 ± 5.6 −0.048 (p = 0.71) −12.11-9.72 19.1 %
Inspiratory vs. free breathing −0.70 ± 4.5 −0.04 (p = 0.72) −9.57-8.16 15.9 %
Expiratory vs. free breathing 0.49 ± 5.0 0.011 (p = 0.93) −9.39-10.37 17.4 %
SV Inspiratory vs. expiratory 0.16 ± 7.2 0.011 (p = 0.93) −13.91-14.23 18.2 %
Inspiratory vs. free breathing 0.48 ± 7.8 0.12 (p = 0.33) −14.86-15.82 20.0 %
Expiratory vs. free breathing 0.31 ± 7.5 0.12 (p = 0.36) −14.38-15.01 19.2 %
EF Inspiratory vs. expiratory 1.77 ± 11.8 −0.027 (p = 0.83) −21.41-24.95 13.8 %
Inspiratory vs. free breathing 1.13 ± 10.0 0.013 (p = 0.92) −18.53-20.78 11.6
Expiratory vs. free breathing −0.64 ± 10.8 0.040 (p = 0.75) −21.80-20.52 12.6 %
  1. EF atrial ejection fraction, EDV end diastolic atrial volume, ESV end systolic atrial volume, SD standard deviation, SV atrial stroke volume