Table 3. Associations of self-reported race/ethnicity with self-reported BCRL status.

	n	# Eventsa	Unadjusted model	Base Modelb	Further adjusted for age BC Dx, baseline BMI, baseline PA, comorbidity, HTN
			HR (95 % CI)	HR (95 % CI)	HR (95 % CI)
Race/ethnicity from self-report
White	1969	133	Ref	Ref	Ref
African American	210	27	2.04 (1.35, 3.08)	1.60 (1.04, 2.47)	1.47 (0.94, 2.30)
Hispanic	351	33	1.47 (1.00, 2.15)	1.28 (0.86, 1.90)	1.18 (0.78, 1.77)
Asian	353	30	1.31 (0.88, 1.95)	1.18 (0.78, 1.79)	1.24 (0.81, 1.92)
Other	70	7	1.57 (0.73, 3.36)	1.20 (0.55, 2.59)	1.21 (0.56, 2.61)
Genetic ancestryc
European ancestry	–	–	Ref	Ref
African ancestry	–	–	2.50 (1.43, 4.36)	1.93 (1.08, 3.43)	1.73 (0.96, 3.14)
Native American ancestry	–	–	2.70 (0.79, 9.23)	1.91 (0.52, 7.07)	1.33 (0.32, 5.51)
Asian ancestry	–	–	1.23 (0.73, 2.05)	1.14 (0.66, 1.94)	1.21 (0.69, 2.11)

^aFollow-up starting at 6 months postbreast cancer diagnosis until BCRL self-report or date of last patient contact (12- or 48-month follow-up), whichever occurred first

^bCox proportional hazards models, adjusted for education, household income, employment, AJCC stage, breast and lymph node surgery, number of lymph nodes examined, chemotherapy, radiation therapy

^cThe estimated percentages of African, Asian and Native American ancestry for each patient were entered in the models as continuous, each with a range of 0–1 and European ancestry set as the default reference. Thus, the HRs with each of the three ancestries should be interpreted as the hazards of a “genetically pure” individual of the respective ancestry relative to a genetically pure individual of European ancestry