Table 4. Correlation Between the Preoperative Risk Factors and Lymphatic Metastasis.

Preoperative risk factor	Univariate*	Multivariate*
	P value	Hazard ratio	95% Confidence interval	P value
Age (< 60, ≥ 60) (ys)	0.49	1.27	0.21 - 7.59	0.79
CA125 (< 29, ≥ 29) (IU/L)	0.011	3.57	0.49 - 26	0.21
Tumor volume (< 12.79, ≥ 12.79) (cm3)	0.012	12.7	1.06 - 154	0.04
Histologic type (G1-2, G3-others)	0.31	5.54	0.78 - 39.4	0.08
Myometrial invasion (< 1/2, ≥ 1/2)	0.17	2.14	0.36 - 12.5	0.39

*Logistic regression analysis.