Table 2.

Multivariable adjusted odds ratios for mastectomy vs. BCS stratified by insurance Status among surgically treated breast cancer patients, Nationwide Inpatient Sample, 2007-2011.

	All		Medicaid/Medicare		Private		Other
	n	AOR(95%CI) α	n	AOR(95%CI) α	n	AOR(95%CI) α	n	AOR(95%CI) α
Race/Ethnicity
White	27350	Ref	13809	Ref	12814	Ref	727	Ref
Black	4651	0.80(0.71- 0.90)	2493	0.82(0.70-0.97)	1889	0.80(0.66-0.97)	269	0.76(0.47-1.25)
Hispanic	2873	0.77(0.67- 0.88)	1451	0.78(0.64-0.95)	1127	0.88(0.69-1.12)	295	0.66(0.42-1.05)
Other	2541	0.86(0.74- 1.00)	1109	0.91(0.73-1.14)	1289	0.87(0.70-1.10)	143	0.60(0.34-1.06)
Area-level Income
Q4-Highest	10975	Ref	4204	Ref	6490	Ref	281	Ref
Q3	8831	0.97(0.87- 1.08)	4215	1.07(0.91-1.25)	4299	0.95(0.81-1.12)	317	0.59(0.34-1.06)
Q2	8728	0.86(0.77- 0.97)	4896	0.96(0.82-1.13)	3465	0.82(0.69-0.98)	367	0.64(0.36-1.15)
Q1-Lowest	8881	0.95(0.84- 1.08)	5547	1.07(0.91-1.26)	2865	0.96(0.78-1.17)	469	0.59(0.34-1.04)
Region
Large metro	21877	Ref	10124	Ref	10841	Ref	912	Ref
Small metro	9398	1.37(1.24- 1.51)	5037	1.50(1.31-1.72)	4066	1.23(1.05-1.44)	295	1.07(0.68-1.68)
Micropolitan	3702	1.44(1.24-1.68)	2167	1.62(1.32-1.98)	1402	1.18(0.93-1.51)	133	1.50(0.74-3.03)
Not metro or micro	2438	1.89(1.54- 2.31)	1534	1.90(1.48-2.44)	810	1.75(1.22-2.52)	94	3.84(1.16-12.64)
Stage at Presentation
Non-metastatic/in-situ	27066	Ref	13617	Ref	12446	Ref	1003	Ref
Metastatic	10349	0.85(0.78- 0.93)	5245	1.06(0.94-1.19)	4673	0.65(0.57-0.74)	431	0.93(0.64-1.34)
Age at admission-years	37415	0.99(0.99- 0.99)	18862	0.99(0.99-1.00)	17119	0.99(0.98-0.99)	1434	0.99(0.98-1.01)
Number of Co- morbidities	37415	0.84(0.78-0.90)	18862	0.83(0.77-0.90)	17119	0.83(0.71-0.96)	1434	1.04(0.68-1.60)

^αAdjusted for race, age, area-level income, region, stage of presentation and number of comorbidities.

AOR= Adjusted Odds Ratio