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Table 3 Mean differences and limit of agreement (mean ± SD) for EF determination by the different methods.

From: Visually estimated ejection fraction by two dimensional and triplane echocardiography is closely correlated with quantitative ejection fraction by real-time three dimensional echocardiography

  Mean difference ± SD Limit of agreement Correlation (r) SEE
3D-EF minus Eyeballing BP -0.5 ± 3.7 -7.9 to 6.9 0.91 3.71
3D-EF minus Eyeballing TP -0.2 ± 2.9 -6 to 5.6 0.95 2.90
Eyeballing BP minus Eyeballing TP 0.3 ± 3.5 -6.7 to 7.3 0.92 3.31
  1. SEE: standard error of estimate.