Table 4.

Racial disparities among breast cancer patients and the odds of late receipt of post-surgery chemotherapy, Retrospective Cohort of South Carolina Cancer Registry, 2002 to 2010.

Stratum	Race	Total n(%)	Early receipt (<39 days) 373(48.6%)	Late receipt (≥39 days) 394(51.4%)	Crude OR*	Adjusted OR Full model**	Adjusted OR Final model***
Overall
	White	547(71.3)	275(50.3)	272(49.7)	Reference	Reference	Reference
	Black	220(28.7)	98(44.6)	122(55.4)	1.3(0.9-1.7)	1.1(0.8-1.5)	1.0(0.7-1.4)
Stage
Local	White	234(30.5)	112(47.9)	122(52.1)	Reference	Reference	Reference
Local	Black	105(13.7)	50(47.6)	55(52.4)	1.0(0.6-1.6)	0.9(0.6-1.5)	0.9(0.6-1.5)
Regional	White	313(40.8)	163(52.1)	150(47.9)	0.8(0.6-1.2)	0.8(0.6-1.2)	0.9(0.6-1.2)
Regional	Black	115(15.0)	48(41.7)	67(58.3)	1.3(0.8-2.0)	1.1(0.7-1.8)	1.1(0.7-1.8)
Urban
Rural	White	119(15.5)	64(53.8)	55(46.2)	Reference	Reference	Reference
Rural	Black	72(9.4)	26(36.1)	46(63.9)	2.1(1.1-3.8)	2.0(1.0-3.7)	2.0(1.1-3.7)
Urban	White	428(55.8)	211(49.3)	217(50.7)	1.2(0.8-1.8)	1.2(0.8-1.8)	1.2(0.8-1.8)
Urban	Black	148(19.3)	72(48.6)	76(51.4)	1.2(0.8-2.0)	1.1(0.6-1.8)	1.0(0.6-1.7)
Surgery date
Early	White	294(38.3)	148(50.3)	146(49.7)	Reference	Reference	Reference
Early	Black	112(14.6)	44(39.3)	68(60.7)	1.6(1.0-2.4)	1.4(0.9-2.2)	1.4(0.9-2.1)
Late	White	253(33.0)	127(50.2)	126(49.8)	1.0(0.7-1.4)	0.9(0.6-1.3)	0.9(0.7-1.3)
Late	Black	108(14.1)	54(50.0)	54(50.0)	1.0(0.7-1.6)	0.8(0.6-1.3)	0.8(0.5-1.3)

^*Crude model with race as only predictor for time to chemotherapy (post-surgery)

^**Full model with race as main predictor for time to chemotherapy with confounders: age, marital status, diagnosis year, cancer grade, BCN enrollment, hormone receptor status, county, distance and insurance provider.

^***Final model with race as main predictor for time to surgery with select confounders based on backward selection in SAS: marital status, diagnosis year and BCN enrollment.