Table 5.
Racial disparities among breast cancer patients and the odds of late receipt of radiation (post-chemotherapy), Retrospective Cohort of South Carolina Cancer Registry, 2002 to 2010.
Stratum | Race | Total n(%) |
Early receipt (<135 days) 188(49.0%) |
Late receipt (≥135 days) 196(51.0%) |
Crude OR* | Adjusted OR Full model** |
Adjusted OR Final model*** |
---|---|---|---|---|---|---|---|
Overall | |||||||
White | 274(71.4) | 138(50.4) | 136(49.6) | Reference | Reference | Reference | |
Black | 110(28.7) | 50(45.4) | 60(54.6) | 1.2(0.8-1.9) | 1.2(0.7-2.0) | 1.3(0.8-2.2) | |
Married | |||||||
Yes | White | 192(55.0) | 95(49.5) | 97(50.5) | Reference | Reference | Reference |
Yes | Black | 50(14.3) | 28(56.0) | 22(44.0) | 0.8(0.4-1.4) | 0.7(0.4-1.5) | 0.9(0.4-1.7) |
No | White | 57(16.3) | 27(47.4) | 30(52.6) | 1.1(0.6-2.0) | 1.2(0.6-2.5) | 1.2(0.7-2.3) |
No | Black | 50(14.3) | 19(38.0) | 31(62.0) | 1.6(0.8-3.0) | 1.8(0.9-3.8) | 2.0(1.0-4.0) |
Diagnosis year | |||||||
2008-2010 | White | 91(23.7) | 47(51.7) | 44(48.4) | Reference | Reference | Reference |
2008-2010 | Black | 40(10.4) | 14(35.0) | 26(65.0) | 1.9(0.9-4.3) | 1.7(0.7-3.9) | 1.9(0.8-4.2) |
2005-2007 | White | 90(23.4) | 43(47.8) | 47(52.2) | 1.2(0.7-2.1) | 0.9(0.5-1.7) | 0.9(0.5-1.6) |
2005-2007 | Black | 34(8.9) | 20(58.8) | 14(41.2) | 0.7(0.3-1.7) | 0.6(0.3-1.5) | 0.7(0.3-1.7) |
2002-2004 | White | 93(24.2) | 48(51.6) | 45(48.4) | 1.0(0.6-1.8) | 0.9(0.5-1.8) | 0.9(0.5-1.6) |
2002-2004 | Black | 36(9.4) | 16(44.4) | 20(55.6) | 1.3(0.6-2.9) | 1.3(0.6-3.0) | 1.4(0.6-3.1) |
Distance | |||||||
<=10 miles | White | 90(27.3) | 45(50.0) | 45(50.0) | Reference | Reference | Reference |
<=10 miles | Black | 39(11.8) | 12(30.8) | 27(69.2) | 2.2(1.0-5.0) | 2.4(1.0-5.8) | 2.6(1.1-6.1) |
>10 miles | White | 143(43.3) | 71(49.7) | 72(50.4) | 1.0(0.6-1.7) | 1.1(0.6-1.9) | 1.1(0.6-1.9) |
>10 miles | Black | 58(17.6) | 32(55.2) | 26(44.8) | 0.8(0.4-1.6) | 0.8(0.4-1.7) | 0.8(0.4-1.8) |
Chemotherapy date | |||||||
Early | White | 158(41.2) | 73(46.2) | 85(53.8 | Reference | Reference | Reference |
Early | Black | 56(14.6) | 19(33.3) | 37(66.1) | 1.7(0.9-3.2) | 1.8(0.8-3.6) | 1.8(0.9-3.6) |
Late | White | 116(30.2) | 65(56.0) | 51(44.0) | 0.7(0.4-1.1) | 0.8(0.4-1.1) | 0.7(0.4-1.0) |
Late | Black | 54(14.1) | 31(57.4) | 23(42.6) | 0.6(0.3-1.2) | 0.5(0.3-1.0) | 0.6(0.3-1.2) |
Crude model with race as only predictor for time to radiation (post-chemotherapy)
Full model with race as main predictor for time to chemotherapy with confounders: age, urban status, cancer stage, cancer grade, BCN enrollment, insurance provider, time to surgery and time to chemotherapy.
Final model with race as main predictor for time to surgery with select confounders based on backward selection in SAS: cancer stage, time to surgery, time to chemotherapy and BCN enrollment.