1.

Baseline characteristics of stent placement in intervention room and operating room.

Variables	Intervention room (n=39)		Operating room (n=43)		P
	No.	Percent	No.	Percent
*: Including chemotherapy, radiotherapy and palliative treatment; #: caused by airway neoplasm or extrinsic compression.
Gender					0.571
Male	28	71.79%	32	74.42%
Female	10	25.64%	11	25.58%
Age (yr)	62.03±10.56		63.06±11.50		0.520
Primary disease					0.477
Lung cancer	18	46.15%	15	34.88%
Esophageal cancer	14	35.90%	21	48.84%
Others	7	17.95%	7	16.28%
Drinking					0.313
Yes	19	48.72%	23	53.49%
No	13	33.33%	17	39.53%
Unknown	7	17.95%	3	6.98%
Smoking					0.317
Yes	16	41.03%	20	46.51%
No	16	41.03%	20	46.51%
Unknown	7	17.95%	3	6.98%
Charlson comorbidity index					0.018
< 4	18	46.15%	13	30.23%
≥5	14	35.90%	28	65.12%
Unknown	7	17.95%	2	4.65%
Clinical manifestation					0.815
Obstruction#	27	69.23%	28	65.12%
Fistula	12	30.77%	15	34.88%
Pre-stent therapy					1.000
Surgery	18	46.15%	19	44.19%
Others*	21	53.85%	24	55.81%
Location					0.066
Above the carina	21	53.85%	32	74.42%
Below the carina	18	46.15%	11	25.58%
Y-shaped stent					< 0.001
No	34	87.18%	9	20.93%
Yes	5	12.82%	34	79.07%