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Table 2 Concordance Correlation Coefficients (CCC) measuring agreement with ground truth

From: Relationship between the Ki67 index and its area based approximation in breast cancer

Ki67 area based Approximation

CCC

95% Confidence Interval

Expert Pathologist (Raw Values)

0.852

(0.780, 0.902)

Expert Pathologist (Linear Model)

0.872

(0.807, 0.916)

Within Tumor (Raw Values)

0.980

(0.969, 0.987)

Within Tumor (Linear Model)

0.987

(0.980, 0.992)

Whole Image (Raw Values) [14, 15]

0.798

(0.726, 0.853)

Whole Image (Cubic Model) [14, 15]

0.963

(0.943, 0.977)