Table 3. Univariate and multivariate survival analysis of cervical cancer patients who received radical surgery.

Parameter	Characteristic	3-year CCS	5-year CCS	Univariate analysis		Multivariate analysis
				Log rank χ2 test	P	HR (95%CI)	P
Year of diagnosis				1.743	0.187	NI
	2004–2008	88.1%	83.5%
	2009–2012	88.9%	82.3%
Age				77.726	0.000		0.002
	<60	89.1%	84.2%			Ref
	≥60	83.1%	74.5%			0.805 (0.699~0.926)	0.002
Race				12.908	0.002		0.009
	White	88.8%	83.6%			Ref
	Black	85.8%	79.1%			1.064 (0.895~1.265)	0.482
	Others	87..8%	82.3%			1.350 (1.082~1.685)	0.008
Grade				156.785	0.000		0.000
	I/II	90.6%	85.5%			Ref
	III/IV	83.0%	76.6%			1.242 (1.037~1.488)	0.019
	Unknown	91.9%	87.4%			1.966 (1.645~2.349)	0.000
Primary Site				24.410	0.000		0.266
	Endocervix	91.5%	86.2%			Ref
	Exocervix	87.9%	84.3%			0.858 (0.732~1.006)	0.059
	Overlapping lesion	87.8%	83.1%			0.987 (0.719~1.354)	0.934
	Cervix uteri	87.4%	82.0%			0.881 (0.646~1.200)	0.421
Histologic type				70.867	0.000		0.000
	Squamous cell carcinoma	87.0%	81.3%			Ref
	Adenocarcinoma	92.2%	87.9%			0.473 (0.353~0.633)	0.000
	Mucinous adenocarcinoma	84.7%	76.1%			0.544 0.404~0.733)	0.000
FIGO stage				934.468	0.000		0.000
	I	92.4%	88.0%			Ref
	II	73.7%	64.7%			0.647 (0.560~0.748)	0.000
	III	58.2%	48.7%			1.406 (1.192~1.658)	0.000
	IV	21.8%	15.6%			2.367 (1.908~2.937)	0.000
	Unknown	85.9%	79.2%			6.989 (4.644~10.518)	0.000
Radiation				608.573	0.000		0.000
	No radiation	92.9%	89.0%			Ref
	Radiation after surgery	78.4%	69.9%			0.321 (0.282~0.365)	0.000
NLN				127.645	0.000		0.000
	0~6	78.3%	71.8%			Ref
	7~	89.6%	84.4%			1.571 (1.370~1.801)	0.000

NI: not included in the multivariate survival analysis.