Table 1.

Associations between patient characteristics and baseline radiation therapy use (N=312)

Patient Characteristic	Full Sample (N=312)		Baseline Radiation Therapy Use				p
			Yes (N=24)		No (N=288)
Continuous	mean	SD	mean	SD	mean	SD
Age in years	58.6	12.6	61.0	14.1	58.4	12.5	0.333
Education in years	12.4	4.0	11.5	3.6	12.4	4.1	0.295
Charlson Comorbidity Index	8.6	2.6	8.8	2.5	8.6	2.6	0.667
Performance Status (ECOG) Score	1.8	0.9	2.0	0.8	1.8	0.9	0.295
Categorical	n	%	n	%	n	%	p
Gender, male	171	54.8%	14	58.3%	157	54.5%	0.718
Race/ethnicity
White	192	61.5%	15	62.5%	177	61.5%	0.953
Black	64	20.5%	5	20.8%	59	20.5%
Hispanic	52	16.7%	4	16.7%	48	16.7%
Other	4	1.3%	0	0.0%	4	1.4%
Married	162	52.8%	11	50.0%	151	53.0%	0.787
Health Insurance	165	54.5%	11	47.8%	154	55.0%	0.507
Recruitment Site
Yale, Simmons, DFCI	90	28.8%	4	16.7%	86	29.9%	0.260
West Haven VA, Parkland	162	51.9%	13	54.2%	149	51.7%
NH Oncology-Hematology	60	19.2%	7	29.2%	53	18.4%
Cancer Diagnosis
Lung	72	23.1%	9	37.5%	63	21.9%	0.219
Colon	40	12.8%	0	0.0%	40	13.9%
Pancreatic	23	7.4%	1	4.2%	22	7.6%
Other Gastrointestinal	38	12.2%	4	16.7%	34	11.8%
Breast	42	13.5%	2	8.3%	40	13.9%
Other	97	31.1%	8	33.3%	89	30.9%
Cytotoxic Chemotherapy Use, Yes	158	50.6%	10	41.7%	148	51.4%	0.360

Variables missing data: Charlson (1), Married (5), Health Insurance (9)