Table 1. Tumor characteristics and induction therapy status.

Tumor characteristics and induction therapy status	Total (n=1,849)	No induction therapy (n=1,683)	Induction therapy (n=166)	P
Tumor size (cm), median [IQR]	6.2 [4.4, 8.7]	6.0 [4.2, 8.5]	9.0 [6.9, 11.2]	0.015
Tumor size (cm), n (%)				<0.001
≥8	582 (31.5)	480 (28.5)	102 (61.4)
<8	1,155 (62.5)	1,103 (65.5)	52 (31.3)
Unknown	112 (6.1)	100 (5.9)	12 (7.2)
Masaoka stage, n (%)				<0.001
I–IIa	877 (47.4)	842 (50.0)	35 (21.1)
IIb	446 (24.1)	420 (25.0)	26 (15.7)
III	526 (28.4)	421 (25.0)	105 (63.3)
Invasive tumor (stage IIb–III), n (%)	972 (52.6)	841 (50.0)	131 (78.9)	<0.001
Any induction therapy, n (%)	166 (9.0)	0 (0.0)	166 (100.0)	<0.001
Induction chemotherapy, n (%)	162 (8.8)	0 (0.0)	162 (97.6)	<0.001
Induction radiation, n (%)	25 (1.4)	0 (0.0)	25 (15.1)	<0.001