Table 4.

Use of BCS versus mastectomy in patients with non-metastatic disease < 5 cm.

	Age<65 (N=3,511)			Age 65+ (n=1,910)
Predictors	OR	95% CI	P-value	OR	95% CI	P-value
Age (per year)	1.01	1.00 –1.03	0.031	0.99	0.97–1.01	0.297
Race
White (ref)
Black	1.24	1.01–1.53	0.043	1.14	0.85–1.53	0.397
Hispanic	1.21	0.83–1.76	0.336	1.34	0.72–2.47	0.356
Other	0.83	060–1.14	0.253	0.66	0.38–1.16	0.147
Health Insurance
Public (ref)
Private	1.37	1.04–1.80	0.023	1.19	0.81–1.75	0.373
Uninsured/NA	1.43	0.96–2.12	0.076	1.76	0.95–3.26	0.071
Census tract education
Low (ref)
High	1.20	0.93–1.54	0.154	1.54	1.09–2.16	0.013
Rural/Urban Residence
Urban (ref)
Urban Rural Mix	0.79	0.64–0.98	0.028	0.75	0.55–1.01	0.055
Rural	0.72	0.53–0.96	0.028	0.68	0.46–1.00	0.048
Census tract poverty
20% + (ref)
< 20%	0.99	0.74–1.32	0.953	0.79	0.55–1.13	0.189
Comorbidity index score
None (ref)
Mild	0.99	0.80–1.22	0.921	0.86	0.63–1.18	0.343
Moderate/Severe	1.36	0.99–1.88	0.060	1.11	0.74–1.66	0.631
CoC Surgery facility status
No (ref)
Yes	1.26	1.03–1.54	0.028	1.30	0.96–1.75	0.095
Tumor size (cm)1
< 0.5 (ref)
0.5–1	1.15	0.79–1.66	0.467	0.92	0.53–1.59	0.833
1 – 1.9	0.92	0.66–1.29	0.643	0.52	0.31–0.87	0.012
2 – 4.9	0.80	0.55–1.18	0.260	0.36	0.20–0.65	0.001
Lymph node status
Negative (ref)
Positive	0.70	0.56–0.88	0.002	0.53	0.38–0.74	0.002
Stage
DCIS (ref)
Stage I	0.90	0.67–1.22	0.508	0.71	0.45–1.11	0.132
Stage II	0.49	0.34–0.71	0.002	0.59	0.34–1.02	0.057
Stage IIIA	0.21	0.11–0.42	<0.001	0.14	0.04–0.47	0.002

¹Tumor size sample restricted to < 5 cm per algorithm in Figure 1.