Table 1. Baseline characteristics of patients stratified by receiving radiotherapy reported at the level of episode of care.

Characteristic	RT (n=133)	No RT (n=14,577)	SD	P value
Number of unique patients, n (%)	131 (98.5)	13,608 (93.4)	–	–
Index diagnosis, n (%)
Lung cancer	124 (93.2)	11,315 (77.6)	0.45*	<0.001*
Metastases cancer	9 (6.8)	3,262 (22.4)	0.45*	–
Histology, n (%)
Non-small cell lung cancer	91 (68.4)	10,002 (68.6)	0.00	0.962
Adenocarcinoma	31 (23.3)	5,487 (37.6)	0.32*	<0.001*
Squamous	32 (24.1)	2,530 (17.4)	0.17*	0.042*
Other non-small cell lung cancer	28 (21.1)	1,985 (13.6)	0.20*	0.013*
Small cell lung cancer	23 (17.3)	870 (6.0)	0.36*	<0.001*
Lung neoplasm NOS	17 (12.8)	17 (12.8)	0.06	0.485
Age at index date, median [IQR]	65 [56–71]	68 [60–75]	0.32*	<0.001*
Female, n (%)	65 (48.9)	6,570 (45.1)	0.08	0.38
Income based socioeconomic status, n (%)				0.181
Quintile 1	39 (29.3)	3,187 (21.9)	0.17
Quintile 2	26 (19.5)	3,147 (21.6)	0.05
Quintile 3	25 (18.8)	2,840 (19.5)	0.02
Quintile 4	17 (12.8)	2,821 (19.4)	0.18
Quintile 5	26 (19.5)	2,516 (17.3)	0.06
Missing	0 (0.0)	66 (0.5)	0.10
Rural location, n (%)	28 (21.1)	2,441 (16.7)	0.11*	0.403
Region by LHIN, n (%)				<0.001*
A	≤5	855 (5.9)	0.23*
B	27 (20.3)	1,131 (7.8)	0.37*
C	8 (6.0)	632 (4.3)	0.08
D	9 (6.8)	1,181 (8.1)	0.05
E	0 (0.0)	339 (2.3)	0.22*
F	≤5	683 (4.7)	0.13*
G	19 (14.3)	3,018 (20.7)	0.17*
H	≤5	1,604 (11.0)	0.32*
I	9 (6.8)	1,553 (10.7)	0.14*
J	18 (13.5)	642 (4.4)	0.32*
K	28 (21.1)	1,170 (8.0)	0.38*
L	0 (0.0)	341 (2.3)	0.22*
M	≤5	942 (6.5)	0.16*
N	≤5	486 (3.3)	0.12*
Charlson comorbidity index, n (%)				0.034*
0	≤5	168 (1.2)	0.17*
1	≤5	192 (1.3)	0.07
2	23 (17.3)	2,674 (18.3)	0.03
≥3	102 (76.7)	11,543 (79.2)	0.06

*, P values <0.05 and SD >0.10. RT, radiotherapy; SD, standardized difference; IQR, interquartile range; LHIN, Local health integration network; NOS, not otherwise specified.