Table 1. Baseline characteristics of patients before and after propensity score matching.

Characteristics	Before propensity score matching				After propensity score matching
	Control group (n=45)	No-waiting group (n=78)	P		Control group (n=33)	No-waiting group (n=33)	P
Age (mean ± SD), years	54.22±12.39	53.22±12.00	0.66		54.12±12.11	50.06±11.79	0.17
Location	5.29±3.56	6.81±4.37	0.04		5.94±3.47	5.27±3.03	0.41
FVC (mean ± SD)	2.70±0.72	2.85±0.66	0.24		2.72±0.64	2.85±0.69	0.43
FVC% (mean ± SD)	79.80±15.37	83.42±11.22	0.17		80.64±13.40	83.94±11.58	0.29
FEV1 (mean ± SD)	2.36±0.71	2.44±0.63	0.53		2.34±0.65	2.50±0.66	0.33
FEV1% (mean ± SD)	85.80±18.83	87.52±13.56	0.56		85.45±16.74	89.58±12.72	0.26
FEV1/FVC (mean ± SD)	104.91±15.07	103.95±6.57	0.69		104.55±13.93	105.85±5.17	0.62
Sex, male, n (%)	18 (40.0)	31 (39.7)	0.99		12 (36.4)	10 (30.3)	0.60
Thoracic adhesion, n (%)	4 (8.9)	5 (6.4)	0.88		3 (9.1)	2 (6.1)	1.00
Emphysema, n (%)	7 (15.6)	4 (5.1)	0.10		5 (15.2)	4 (12.1)	1.00