Table 4.

Model for predicting total number of LNs

Model	β	SE	t	p
Constanta	11.628	7.839	1.483	0.164
CNP-staining LNs	1.062	0.329	3.223	0.007
Metastatic LNs	2.373	1.126	0.475	0.035
R square		0.537
Sample size		15

Dependent variable: number of lymph nodes (Y); predictors: constant, CNP-staining LNs (X1), metastatic LNs (X2)

^aGender, age, BMI, location, surgery, operation time, bleeding, diameter, and pathological stage were included