Table 3. Comparative analyses of the IHC-based results on resection, biopsy and cytology specimens.

Judgment regarding positive result	Type	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	κ
	Total	93.42	54.25	55.69	93.06	0.422
= 0 as negative	Resection	96.61	58.14	61.29	96.15	0502
≥1 as positive	Biopsy	92.59	51.08	52.45	92.21	0.335
	Cytology	83.33	59.09	52.63	86.67	0.181
	Total	77.63	86.64	78.14	86.4	0.644
≤1 as negative	Resection	79.66	93.02	88.68	86.96	0.739
≥2 as positive	Biopsy	80.25	83.45	73.86	87.89	0.626
	Cytology	50	81.82	60	75	0.331
	Total	31.58	100	100	70.37	0.364
≤2 as negative	Resection	30.51	100	100	67.72	0.342
= 3 as positive	Biopsy	34.57	100	100	72.4	0.4
	Cytology	16.67	100	100	68.75	0.206