Table 4.

EGFR mutation detection by exosomes and cell blocks in MPEs.

EGFR mutation status		Cell blocks		Total	Kappa coefficient
		M	WT
Exosomes	M	16	1	17	0.939 (P < 0.001*)
	WT	0	16	16
Total		16	17	33

EGFR, epidermal growth factor receptor; MPEs, malignant pleural effusions; M, mutant; WT, wild type.

^*P value was calculated by Consistency test.