Table 2.

Predictors of Delay to Surgery

	Odds Ratio Estimates
		Estimate	95% Confidence Limits		P-value
Phenotype	HER2+	REF
	TN	0.82	0.79	0.84	<0.001
	HR+	1.01	0.98	1.03	0.625
Age	<50	REF
	50–59	0.98	0.96	1.00	0.047
	60–69	0.96	0.94	0.98	0.001
	≥ 70	0.84	0.81	0.86	<0.001
Race	White	REF
	Black	1.71	1.67	1.76	<0.001
	Asian	1.03	0.99	1.07	0.183
	Other/Unknown	1.11	1.05	1.17	0.002
Hispanic	No	REF
	Yes	1.3	1.26	1.35	<0.001
	Unknown	0.97	0.93	1.02	0.192
Insurance	Private Insurance	REF
	Medicaid	1.76	1.71	1.82	<0.001
	Medicare	1.12	1.09	1.14	<0.001
	Other Government	1.34	1.25	1.43	<0.001
	Not Insured	1.44	1.36	1.52	<0.001
	Unknown	1.13	1.05	1.21	0.001
Education	≥ 21%	REF
	13% - 20.9%	0.96	0.93	0.98	0.002
	7%−12.9%	0.92	0.89	0.95	<0.001
	< 7%	0.86	0.83	0.89	<0.001
Income	< $38,000	REF
	$38,000 - $47,999	0.97	0.95	1.00	0.023
	$48,000 - $62,999	0.97	0.94	0.99	0.015
	$63,000 +	0.90	0.87	0.94	<0.001
Setting	Large metropolitan	REF
	Small metropolitan	0.95	0.92	0.98	0.001
	Suburban	0.91	0.87	0.94	<0.001
	Rural	0.86	0.81	0.90	<0.001
	Unknown	0.99	0.94	1.04	0.670
Facility Volume	1st quartile: 0–45 pts/year	0.73	0.64	0.82	<0.001
	2nd quartile: 46–82 pts/year	0.78	0.70	0.88	<0.001
	3rd quartile: 83–152 pts/year	0.83	0.74	0.93	0.002
	4th quartile: >152 pts/year	REF
Distance (miles)	≤ 10	REF
	11–20	0.99	0.97	1.01	0.148
	21–40	0.98	0.95	01.0	0.035
	>40	1.04	1.00	1.07	0.044
	Unknown	1.31	0.67	2.54	0.428
Transition	No	REF
	Yes	1.58	1.55	1.61	<0.001
	Unknown	0.97	0.95	0.99	0.003
Year of Diagnosis	2010	0.72	0.70	0.74	<0.001
	2011	0.76	0.75	0.78	<0.001
	2012	0.83	0.81	0.85	<0.001
	2013	0.92	0.90	0.93	<0.001
	2014	REF
Comorbidities	0	0.70	0.64	0.76	<.0001
	1	0.79	0.72	0.85	<0.001
	2	0.90	0.83	0.99	0.033
	≥3	REF
Histology	Ductal	REF
	Lobular	1.10	1.07	1.12	<0.001
	Other	1.00	0.95	1.05	0.914
Grade	Well	REF
	Moderate	0.98	0.96	1.00	0.014
	Poor	0.86	0.84	0.88	<0.001
	Undifferentiated/Anaplastic	0.91	0.77	1.08	0.273
	Unknown	0.99	0.95	1.02	0.522
Tumor Size	<10mm	REF
	10–19mm	0.98	0.96	0.99	0.008
	≥ 20mm	0.93	0.91	0.96	<0.001
	Unknown	1.05	0.98	1.11	0.157
Stage	I	0.91	0.87	0.94	<0.001
	II	0.94	0.91	0.97	<0.001
	III	REF
Surgery Type	Breast Conservation	REF
	Mastectomy	1.36	1.32	1.39	<0.001
	Mastectomy with Reconstruction	2.99	2.92	3.07	<0.001
Chemotherapy	No	REF
	Yes	0.79	0.78	0.81	<0.001
Radiation	No	REF
	Yes	0.83	0.82	0.85	<0.001
Endocrine therapy	No	REF
	Yes	0.87	0.86	0.89	<0.001
Nodes examined	0–1	REF
	2	1.02	1.00	1.04	0.143
	3–4	1.00	0.98	1.03	0.672
	≥5	0.96	0.94	0.98	0.002
Positive Nodes	0	REF
	≥1	1.13	1.1	1.16	<0.001
	No nodes examined	1.31	1.26	1.37	<0.001

TN = Triple negative, HR+ = Hormone Receptor-Positive, HER2+ = HER2−enriched, REF=Referent