Table 3. Cox Regression Model for Risk of Death.

	HR	95% CI			p
Cancer
Cervical	reference group
Ovarian	1.13	1.07	-	1.20	<0.01
Endometrial	1.05	0.99	-	1.11	0.13
Uterine sarcoma	0.84	0.61	-	1.16	0.30
Vulvar	ND
Hospital Volume
High	reference group
Intermediate+Low	0.96	0.91	-	1.03	0.25
Facility
Teaching	reference group
Non-Teaching	1.08	0.99	-	1.18	0.08
Age Groups
<40	reference group
41–65	1.52	1.43	-	1.63	<0.01
>65	2.61	2.41	-	2.83	<0.01
Race
Caucasian	reference group
AA	1.36	1.27	-	1.45	<0.01
Other	0.84	0.69	-	1.02	0.08
Ethnicity
Hispanic	reference group
Non-Hispanic	0.99	0.92	-	1.07	0.84
Primary Payor
insured	reference group
non-insured	1.00	0.91	-	1.11	0.98
Medicare	1.03	0.97	-	1.09	0.39
Medicaid	1.29	1.14	-	1.48	<0.01
Medicare/Medicaid NOS	1.12	1.05	-	1.19	<0.01
Government	0.81	0.47	-	1.39	0.45
Unknown	1.13	1.08	-	1.18	<0.01
Lymph Nodes Examined
none examined	reference group
1 to 10	0.79	0.73	-	0.85	<0.01
11 to 20	0.67	0.62	-	0.73	<0.01
20 to 30	0.62	0.55	-	0.70	<0.01
>30	0.60	0.49	-	0.75	<0.01
Unknown	0.95	0.92	-	0.99	0.02
Tumor stage
Localized	reference group
Regional	2.08	1.97	-	2.20	<0.01
Distant	3.82	3.58	-	4.07	<0.01
Unknown	1.67	1.57	-	1.79	<0.01
Tumor Grade
Well differentiated	reference group
Moderately differentiated	1.47	1.38	-	1.57	<0.01
Poorly differentiated	1.93	1.81	-	2.05	<0.01
Undifferentiated	2.21	2.01	-	2.43	<0.01
Unknown	1.81	1.70	-	1.92	<0.01
Surgical Extirpation
Yes	reference group
No	1.57	1.52	-	1.64	<0.01
Chemotherapy
Yes	reference group
No	1.08	1.03	-	1.13	<0.01
Radiation
Yes	reference group
No	0.90	0.86	-	0.94	<0.01

AA = African American, HR = hazard ration, ND = not determined.