Table 3. Multivariate models of prognostic factors.

Factors		aHR* of overall survival (95% CI)	p-value
Age (yr)
	≤40	Reference
	≤50	0.945 (0.848–1.054)	0.310
	≤60	0.898 (0.808–0.998)	0.046
	≤70	0.868 (0.775–0.973)	0.015
	>70	1.489 (1.331–1.665)	<0.001
T categories
	T1B	Reference
	T2	2.116 (1.905–2.351)	<0.001
	T3	3.448 (3.053–3.894)	<0.001
	T4	4.400 (3.822–5.065)	<0.001
N categories
	N0	Reference
	N1	1.733 (1.607–1.868)	<0.001
M categories
	M0	Reference
	M1†	2.884 (2.593–3.208)	<0.001
	PAN metastasis	1.684 (1.506–1.882)	<0.001
	Unclear	1.655 (1.026–2.688)	0.039
Histology
	SCC	Reference
	Adenocarcinoma	1.928 (1.776–2.094)	<0.001
	Others	1.869 (1.681–2.077)	<0.001
1st treatment
	Surgery	Reference
	Radiation	1.636 (1.471–1.820)	<0.001
	Chemo	1.720 (1.538–1.924)	<0.001
	Others	2.544 (1.831–3.535)	<0.001
Hospitals
	Non-JSGO-accredited	Reference
	JSGO-accredited	0.843 (0.784–0.905)	<0.001

aHR, adjusted hazard ratio; CI, confidence interval; HR, hazard ratio; JSGO, Japan Society of Gynecologic Oncology; M, metastasis; N, node; PAN, para-aortic lymph node; SCC, squamous cell carcinoma; T, tumor.

^*HRs are adjusted for all variables in the table; ^†without PAN metastasis.