Table 2. Concordance between CNB and SE for benign and malignant, CIS and IBC.

Pathology type	CNB, n (%)	SE, n (%)	BA	CR	95% CI	Kappa	P value
Pathology category			0.98	0.99	0.98–0.99	0.97	<0.001
Benign	2,460 (58.45)	2,410 (57.26)
Malignant	1,749 (41.55)	1,799 (42.74)
Pathology grade			0.95	0.92	0.90–0.93	0.66	<0.001
CIS	256 (18.09)	138 (9.75)
IBC	1,159 (81.91)	1,277 (90.25)

CNB, core needle biopsy; SE, surgical excision; CIS, in situ carcinoma; IBC, invasive breast cancer; BA, balance accuracy; CR, confidence rate; CI, confidence interval.