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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.