Table 3.

Multivariate adjusted odds ratios for surgical treatment, SEER 2000–2010

	HR subtype AOR (95 % CI)a	SES AOR (95 % CI)b	HCA AOR (95 % CI)c	Fully adjusted AOR (95 % CI)d
Race/ethnicity
NH-White (referent)	–	–	–	–
NH-Black	0.55 (0.53–0.57)	0.54 (0.52–0.56)	0.54 (0.52–0.57)	0.55 (0.53–0.58)
Hispanic	0.81 (0.77–0.85)	0.80 (0.77–0.84)	0.81 (0.77–0.85)	0.82 (0.78–0.86)
Age at diagnosis
40–44 (referent)	–	–	–	–
45–54	0.78 (0.73–0.83)	0.78 (0.73–0.83)	0.78 (0.73–0.83)	0.78 (0.73–0.83)
55–64	0.61 (0.57–0.65)	0.61 (0.58–0.65)	0.61 (0.58–0.65)	0.61 (0.57–0.65)
65–74	0.55 (0.51–0.58)	0.55 (0.52–0.59)	0.55 (0.52–0.59)	0.55 (0.51–0.58)
75+	0.30 (0.28–0.32)	0.31 (0.29–0.32)	0.31 (0.29–0.33)	0.30 (0.28–0.32)
Breast cancer hormone-receptor subtype
HR+ (referent)	–			–
HR−	0.82 (0.80–0.85)			0.82 (0.79–0.85)
County-level socio-economic status†
% Black population (SD = 13.24)		0.97 (0.95–0.99)		1.00 (0.97–1.03)
% Unemployed (SD = 2.20)		1.07 (1.04–1.10)		1.07 (1.03–1.10)
% Less than 9th grade education     (SD = 4.74)		0.97 (0.94–1.00)		0.99 (0.95–1.02)
% Families below poverty level     (SD = 4.75)		0.96 (0.92–1.01)		0.97 (0.93–1.02)
County-level healthcare access†
% No health insurance (SD = 4.68)			0.96 (0.94–0.99)	0.94 (0.89–0.98)
# Oncology hospitals per million (SD = 10.08)			1.01 (0.99–1.03)	1.01 (0.99–1.02)
# Medical doctors per million     (SD = 520.55)			0.93 (0.90–0.96)	0.94 (0.91–0.97)
# OB GYN per million (SD = 70.47)			1.01 (0.98–1.04)	1.00 (0.97–1.03)

AOR adjusted odds ratios

Bold indicates significance p value ≤0.05

^aAdjusted for race, age, SEER registry, late-stage diagnosis, and HR subtype

^bAdjusted for race, age, SEER registry, late-stage diagnosis, and county-level SES

^cAdjusted for race, age, SEER registry, late-stage diagnosis, and county-level HCA

^dAdjusted for race, age, SEER registry, late-stage diagnosis, HR subtype, and county-level SES and HCA

^†ORs associated with standard deviation increase