Table 1.

Clinical characteristics of the patients before and after propensity score matching.

	Overall N = 295 (%)	Before Matching				After Matching
		Group NCT		Group NCRT		P	Group NCT		Group NCRT		P
		N = 278	%	N = 17	%		N = 68	%	N = 17	%
Age						0.183					0.722
<70 years	263 (89.2)	250	89.9	13	76.5		57	83.8	13	76.5
≥70 years	32 (10.8)	28	10.1	4	23.5		11	16.2	4	23.5
Sex						0.593					0.638
Male	216 (73.2)	205	73.7	11	64.7		48	70.6	11	64.7
Female	79 (26.8)	73	26.3	6	35.3		20	29.4	6	35.3
Performance status						0.800					1.000
0	50 (16.9)	48	17.3	2	11.8		9	13.2	2	11.8
1	245 (83.1)	230	82.7	15	88.2		59	86.8	15	88.2
Tobacco use						0.251					0.823
Yes	144 (48.8)	138	49.6	6	35.3		26	38.2	6	35.3
No	151 (51.2)	140	50.4	11	64.7		42	61.8	11	64.7
Alcohol use						0.521					1.000
Yes	117 (39.7)	109	39.2	8	47.1		32	47.1	8	47.1
No	178 (60.3)	169	60.8	9	52.9		36	52.9	9	52.9
Comorbidity						0.775					1.000
Absent	217 (73.6)	205	73.7	12	70.6		48	70.6	12	70.6
Present	78 (26.4)	73	26.3	5	29.4		20	29.4	5	29.4
Tumor location						0.709					0.714
Upper/middle	214 (72.4)	201	72.3	13	76.5		49	72.1	13	76.5
Distal	81 (27.5)	77	27.7	4	23.5		19	27.9	4	23.5
Clinical stage						0.620					0.737
II	105 (35.6)	98	35.3	7	41.2		25	36.8	7	41.2
III/IV	190 (64.4)	180	64.7	10	58.8		43	63.2	10	58.8
cT stage						1.000					0.938
II/III	248 (84.1)	234	84.2	14	82.4		59	86.8	14	82.4
IV	47 (15.9)	44	15.8	3	17.6		9	13.2	3	17.6
cN stage						0.514					0.493
N0	100 (33.9)	93	33.5	7	41.2		22	32.4	7	41.2
N1	195 (66.1)	185	66.5	10	58.8		46	67.6	10	58.8