A Predictive Model for Nonsentinel Node Status after Sentinel Lymph Node Biopsy in Sentinel Lymph Node-Positive Chinese Women with Early Breast Cancer

Table 4

The assignment table of independent factors about non-SLN metastasis.

Factors	Assignment
Tumor size = a	a = x1,x1 (cm) is the actual measured value in clinic
Multifocality = b	Yes = 1; No = 0
Lymphovascular invasion = c	Yes = 1; No = 0
Number of metastasis SLN = d	d = x2, x2 is the number of metastasis SLN
Number of nonmetastasis SLN = e	e = x3, x3 is the number of nonmetastasis SLN