Table 3.

FNR and Sensitivity of Frozen Sections in SLNs by Size of SLNs Metastases (n = 810)

List	True Positive	False Negtive	Total	Sensitive Rate, %	FNR, %	OR, % (95% CI)	P value
Macrometastasis	567	78	645	87.91	12.09	1	<0.001
Micrometastasis	43	71	114	37.72	62.28	12.00 (7.68 to 18.76)
Isolated tumor cells	12	39	51	23.53	76.47	23.63 (11.86 to 47.05)
Total	622	188	810	76.79	23.21	–	–

Abbreviations: FNR, False negative rate; SLNs, sentinel lymph nodes.