Concordance between Immunohistochemistry and Microarray Gene Expression Profiling for Estrogen Receptor, Progesterone Receptor, and HER2 Receptor Statuses in Breast Cancer Patients in Lebanon

Table 3

Concordance rates and agreement measures of microarray gene expression compared to Immunohistochemistry as reference.

	ER		PR		HER2
	Value	95% CI	Value	95% CI	Value	95% CI
Concordance	0.975	0.914–0.997	0.864	0.770–0.930	0.975	0.914–0.997
Kappa	0.918	0.773–1.000	0.652	0.405–0.849	0.861	0.428–0.916
Positive Agreement	1.000	0.930–1.000	0.931	0.824–0.9777	0.778	0.401–0.960
Negative Agreement	0.875	0.604–0.978	0.696	0.469–0.859	1.000	0.936–1.000
Positive Predictive Value	0.970	0.886–0.994	0.885	0.771–0.948	1.000	0.560–1.000
Negative Predictive Value	1.000	0.732–1.000	0.800	0.557–0.933	0.972	0.896–0.995