2.

Clinical assessment of stent placement in intervention room and operating room

Variables	Intervention room (n=39)		Operating room (n=43)		P
	No.	Percent	No.	Percent
*: Clinical response of stent placement was assessed by the symptom improvement grade. Dysphagia was graded on a 5-point scale: no dysphagia (0), able to eat soft food (I), pureed food (II), liquids only (III), and not even liquids (IV). Dyspnea was graded on a 4-point scale: none (0), slight (I), severe (II), and stridor (III). Any grade improvement was defined as positive clinical response.
Clinical response*					0.026
No	25	64.10%	16	37.21%
Yes	14	35.90%	27	62.79%
Number of stent					< 0.001
1	38	97.44%	26	60.47%
2	1	2.56%	16	37.21%
3	0	0.00%	1	2.33%
Tumor debulking and balloon dilatation					0.051
No	32	82.05%	26	60.47%
Yes	7	17.95%	17	39.53%
Complication					0.278
No	16	41.03%	23	53.49%
Yes	23	58.97%	20	46.51%
Length of stent (mm)	43.08±21.68		80.53±38.21		< 0.001
Stent placement time (min)	41.97±38.54		68.62±73.92		0.061
Survival					0.503
No	14	35.90%	19	44.19%
Yes	25	64.10%	24	55.81%