Table 3. Multivariate analysis on factors in influencing survival.

Variable	χ2	P value	Hazard ratio	95% CI
Sex	0.297	0.586	1.131	0.726–1.762
Age	0.325	0.569	1.130	0.742–1.723
Number of MPC*	2.068	0.150	1.351	0.897–2.037
Serosal invasion	0.173	0.678	0.762	0.211–2.750
The status of lymph node	0.010	0.921	1.053	0.381–2.912
Pathological stage	11.474	0.001	1.780	1.275–2.484
Operation curability	27.844	0.000	0.212	0.119–0.378

^*MPC microscopic peritoneal carcinomatosis.