Table 3.

COX proportional hazards models for overall survival for the entire cohort

	Univariable		Multivariable
Variable	HR	95% CI	HR	95% CI
Place of birth
USA (reference)	--		--
Caribbean	0.81	0.52 to 1.27	0.65	0.40 to 1.07
Age at diagnosis (continuous)	1.03	1.01 to 1.05	1.01	0.98 to 1.04
Surgery
No (reference)	--
Yes	0.54	0.33 to 0.86	0.58	0.33 to 1.02
Hormone antagonism
No (reference)	--
Yes	0.46	0.17 to 1.27
Chemotherapy
No (reference)	--
Yes	1.55	0.99 to 2.43
Radiation
No (reference)	--
Yes	0.5	0.28 to 0.88	0.53	0.29 to 1.00
Tobacco use
Never/former (reference)	--
Current	1.32	0.57 to 3.06
Alcohol use
Never/former (reference)	--
Current	0.59	0.21 to 1.61
Stage of disease
Stages I and II (reference)	--
Stages III and IV	4.84	2.97 to 7.91	3.81	2.20 to 6.57
Histologic grade
Grades I and II (reference)	--
Grade III or undifferentiated	4.81	2.53 to 9.14	2.34	1.17 to 4.72
Insurance status
Insurance (reference)
No insurance	0.89	0.50 to 1.60