Table 3. Univariate and multivariate analyses of clinical factors for survival after cytoreductive surgery by the proportional hazard model.

		Univariate analysis			Multivariate analysis
		Hazard ratio	95% CI	P values	Hazard ratio	95% CI	P values
Age at recurrence	(continuous variable)	1.001	0.97–1.03	0.96	–	–	–
Interval between surgeries	(continuous variable)	0.993	0.97–1.01	0.47	–	–	–
Preoperative KPS	<80%	1			1
	80–100%	0.43	0.14–1.35	0.15	1.20	0.31–4.54	0.78
KPS change after surgery	decrease	1			1
	stable	0.24	0.09–0.66	0.005	0.22	0.07–0.71	0.01*
Extent of Resection (%)	(continuous variable)	0.98	0.95–1.02	0.37	–	–	–
BCNU wafer implantation	no	1			1
	yes	0.48	0.19–1.17	0.11	1.12	0.37–3.46	0.84
BEV available after surgery	yes	1			1
	no	3.19	1.27–7.98	0.013	3.34	1.11–10.1	0.03*

BEV: bevacizumab, CI: confidence interval, KPS: Karnofsky Performance Status.