Table 2. Multivariate Cox proportional hazards analysis of overall survival of patients with uterine carcinoma, 1990–2008 (n = 10,365).

Variable	Group	People	Person-years	Deaths	HR	95% CI	p
Age (years)
	<30	147	853.6	21	1.13	0.73–1.76	0.58
	30–39	888	5398.3	98	0.91	0.72–1.13	0.39
	40–49	2712	15740.4	328	1	Referent
	50–59	3813	19911.0	641	1.43	1.26–1.64	<0.001
	60–69	1847	9036.4	597	2.67	2.33–3.05	<0.001
	≥ 70	958	3725.6	480	4.54	3.93–5.24	<0.001
Period
	1990–1994	1067	8478.1	324	0.95	0.83–1.09	0.49
	1995–1999	1877	15176.4	534	1	Referent
	2000–2008	7421	31010.8	1,307	0.80	0.71–0.91	<0.001
Subtype
	Endometrioid	9420	51385.5	1664	1	Referent
	Clear	209	863.7	86	2.05	1.65–2.55	<0.001
	Serous	305	1239.9	145	2.55	2.15–3.03	<0.001
	Carcinosarcoma	431	1176.3	270	4.60	4.03–5.25	<0.001

HR: hazard ratio, CI: confidence interval.