Table 2. Multivariable Cox hazard model in relation to OS.

Variables		Original cohort			PS-matching cohort
		HR	95% CI	p-value	HR	95% CI	p-value
Age (yr)
	≤55	Reference		0.464	Reference		0.194
	>55	0.835	0.514–1.350		0.664	0.355–1.228
Surgery
	Group I	Reference		0.538	Reference		0.615
	Group II	0.846	0.703–2.064		1.170	0.633–2.187
FIGO stage
	II	Reference		0.035	Reference		0.674
	III–IV	1.706	1.044–2.854		1.142	0.616–2.167
CA125 value (U/mL)
	≤35	Reference		0.168	Reference		0.175
	>35	1.577	0.834–3.304		1.761	0.792–4.673
Chemotherapy
	Non-TP	Reference		0.497	Reference		0.242
	TP	0.832	0.500–1.433		0.672	0.357–1.325

Group I is patients with full-staging standard surgery and group II is patients with non-staging limited surgery.

CA125, cancer antigen 125; CI, confidence interval; HR, hazard ratio; FIGO, Internatinal Federation of Gynecology and Obstetrics; OS, overall survival; PS, propensity score; TP, taxane plus platinum.