Table 5.

Receipt of Breast Conservation Surgery with RT versus No RT

	Age<65 (N=2,430)			Age 65+ (N=1,291)
Predictors	OR	95% CI	P-value	OR	95% CI	P-value
Age (per year)	0.98	0.96–1.00	0.053	0.88	0.85–0.90	<.001
Race
White (ref)
Black	0.91	0.66–1.26	0.566	0.71	0.47–1.07	0.117
Hispanic	0.95	0.56–1.62	0.855	0.40	0.21–0.82	0.012
Other	0.82	0.49–1.37	0.447	0.50	0.22–1.19	0.101
Health Insurance
Public (ref)
Private	1.22	0.81–1.83	0.350	0.75	0.44–1.27	0.283
Uninsured/NA	0.99	0.54–1.80	0.962	1.05	0.55–2.00	0.891
Census tract education
Low (ref)
High	1.20	0.80–1.82	0.376	1.26	0.76–2.08	0.370
Rural/Urban Residence
Urban (ref)
Urban Rural Mix	0.98	0.69–1.38	0.896	1.22	0.82–1.83	0.334
Rural	1.51	0.91–2.51	0.107	1.14	0.68–1.91	0.613
Census tract poverty
20% + (ref)
<20%	1.13	0.75–1.70	0.566	1.04	0.60–1.80	0.885
Comorbidity index score
None (ref)
Mild	1.38	0.97–1.96	0.072	0.97	0.62–1.52	0.894
Moderate/Severe	0.86	0.54–1.36	0.519	0.52	0.31–0.87	0.012
CoC Surgery facility status
No (ref)
Yes	1.46	1.03–2.07	0.037	1.08	0.75–1.56	0.673
Tumor size (cm)
< 0.5 (ref)
0.5–1	2.22	1.25–3.94	0.008	1.65	0.91–3.01	0.103
> 1 – 2	1.89	1.07–3.34	0.034	1.60	0.92–2.75	0.094
> 2 – 5	1.22	0.68–2.21	0.512	1.07	0.54–2.11	0.857
> 5	0.47	0.11–1.89	0.285	0.90	0.13–6.25	0.914
Lymph node status
Negative (ref)
Positive	0.67	0.43–1.04	0.077	0.70	0.40–1.21	0.204
Stage
DCIS (ref)
Stage I	2.94	2.03–4.26	<0.001	2.16	1.39–3.35	0.001
Stage II	1.96	1.15–3.31	0.013	2.37	1.19–4.75	0.015
Stage IIIA	6.03	1.56–23.3	0.009	2.90	0.22–39.0	0.422