Table 2. Characteristics predictive for ART delivery on multivariable logistic regression analysis.

Characteristic	Odds ratio	95% confidence interval	P value
Age
<60	1 (reference)	−	−
60–70	1.260	1.038–1.531	0.019
>70	1.569	1.184–2.079	0.002
Sex
Male	1 (reference)	−	−
Female	0.969	0.773–1.214	0.783
Race
White	1 (reference)	−	−
African American	0.897	0.568–1.417	0.641
Hispanic	0.988	0.553–1.765	0.967
Other/not recorded	0.773	0.443–1.348	0.364
Histology
Adenocarcinoma	1 (reference)	−	−
Squamous cell	1.496	1.162–1.927	0.002
cT stage
T1b	1 (reference)	−	−
T2	0.660	0.304–1.432	0.293
T3	0.647	0.302–1.389	0.262
T4a	2.823	0.763–10.437	0.120
pN stage
N 0	1 (reference)	−	−
N1	1.080	0.911–1.281	0.377
N2–3	1.736	1.281–2.351	<0.0001
Charlson Deyo score
0	1 (reference)	−	−
1	1.000	0.822–1.218	0.997
2	1.166	0.801–1.696	0.423
Tumor location
Cervical/upper	1 (reference)	−	−
Thoracic/middle	0.610	0.279–1.333	0.215
Abdominal/lower	0.603	0.280–1.298	0.196
Overlapping	0.673	0.290–1.563	0.358
Facility type
Non academic	1 (reference)	−	−
Academic	1.639	1.383–1.942	<0.0001
Insurance
Medicaid	1 (reference)	−	−
Private	1.355	0.928–1.977	0.115
Medicare	1.090	0.726–1.636	0.678
Not insured	0.968	0.518–1.807	0.917
Income
<$46,000	1 (reference)	−	−
$46,000+	0.932	0.788–1.101	0.407
Year of diagnosis
2004–2008	1 (reference)	−	−
2009–2013	3.406	2.797–4.147	<0.0001
Distance from facility
≤20 miles	1 (reference)	−	−
>20 miles	0.894	0.749–1.067	0.214
Region
Northeast	1 (reference)	−	−
Southeast	1.157	0.922–1.452	0.208
Southwest	3.067	1.628–5.775	0.001
Midwest	0.686	0.557–0.845	<0.0001
West	1.263	0.965–1.652	0.088

ART, advanced radiotherapy technique.