Table 1.

Patient characteristics by treatment group.

	No Treatment		PRT Alone		CT Alone		CT + PRT		DRT Alone		CT + DRT
	N	%	N	%	N	%	N	%	N	%	N	%
Patients	1550	71.2%	41	1.9%	286	13.1%	35	1.6%	52	2.4%	212	9.7%
Mean age	77.8		80.2		69.6		74.9		81.7		73.3
Age groups
79 or younger	694	44.8%	14	34.1%	218	76.2%	21	60.0%	16	30.8%	134	63.2%
80 or older	856	55.2%	27	65.9%	68	23.8%	14	40.0%	36	69.2%	78	36.8%
Mean follow-up (months)	14.8		10.9		18.5		13.7		20.0		21.8
Gender
Male	780	50.3%	27	65.9%	172	60.1%	22	62.9%	31	59.6%	129	60.8%
Female	770	49.7%	14	34.1%	114	39.9%	13	37.1%	21	40.4%	83	39.2%
Charlson-Deyo Comorbidity Score
0	935	60.3%	22	53.7%	191	66.8%	16	45.7%	28	53.8%	142	67.0%
1+	615	39.7%	19	46.3%	95	33.2%	19	54.3%	24	46.2%	70	33.0%
Distance from care
<10.2 mi	738	47.6%	25	61.0%	130	45.5%	21	60.0%	27	51.9%	90	42.5%
≥10.2 mi	747	48.2%	12	29.3%	142	49.7%	14	40.0%	24	46.2%	107	50.5%
Unknown	65	4.2%	4	9.8%	14	4.9%	0	0.0%	1	1.9%	15	7.1%
Race
White	1321	85.2%	37	90.2%	238	83.2%	29	82.9%	44	84.6%	185	87.3%
Non-White	229	14.8%	4	9.8%	48	16.8%	6	17.1%	8	15.4%	27	12.7%
Income
<$48,000 per year	653	42.1%	16	39.0%	115	40.2%	19	54.3%	19	36.5%	87	41.0%
≥$48,000 per year	826	53.3%	21	51.2%	157	54.9%	16	45.7%	32	61.5%	109	51.4%
Unknown	71	4.6%	4	9.8%	14	4.9%	0	0.0%	1	1.9%	16	7.5%
Year diagnosed
2004–2010	680	43.9%	10	24.4%	81	28.3%	12	34.3%	29	55.8%	91	42.9%
2011–2017	870	56.1%	31	75.6%	205	71.7%	23	65.7%	23	44.2%	121	57.1%
Clinical Stage
I	911	58.8%	28	68.3%	88	30.8%	14	40.0%	30	57.7%	98	46.2%
II or III	639	41.2%	13	31.7%	198	69.2%	21	60.0%	22	42.3%	114	53.8%
T Stage
1 or 2	646	41.7%	24	58.5%	105	36.7%	12	34.3%	17	32.7%	76	35.8%
3 or 4	385	24.8%	10	24.4%	125	43.7%	15	42.9%	10	19.2%	58	27.4%
Unknown	519	33.5%	7	17.1%	56	19.6%	8	22.9%	25	48.1%	78	36.8%
N Stage
0	892	57.5%	29	70.7%	152	53.1%	19	54.3%	24	46.2%	101	47.6%
1	119	7.7%	5	12.2%	74	25.9%	8	22.9%	3	5.8%	33	15.6%
Unknown	539	34.8%	7	17.1%	60	21.0%	8	22.9%	25	48.1%	78	36.8%

CT = chemotherapy, PRT = palliative radiotherapy, DRT = definitive radiotherapy.