Table 2.

Clinicopathological Factors between General Anesthesia and Deep Sedation

	General anesthesia (n=115)	Deep sedation (n=112)	p-value
Size of tumors (mm)	21 (3–77)	14 (3–63)	<0.001
Location of tumors			0.05
Upper third	22 (19.1)	11 (9.8)
Middle third	67 (58.3)	63 (56.3)
Lower third	26 (22.6)	38 (33.9)
Circumference of the lumen (tumor)			0.042
<2/3	99 (86.1)	106 (94.6)
≥2/3	16 (13.9)	6 (5.4)
Histologic type			0.03
Squamous cell carcinoma	98 (85.2)	108 (96.4)
Intraepithelial neoplasia	9 (7.8)	3 (2.7)
Adenocarcinoma	7 (6.1)	1 (0.9)
Others	1 (0.9)	0
Depth of invasion			0.105
EP	57 (49.6)	47 (42.0)
LPM	25 (21.7)	40 (35.7)
MM	19 (16.5)	17 (15.2)
SM	14 (12.2)	8 (7.1)
Lymphatic invasion	5 (4.3)	2 (1.8)	0.446
Vascular invasion	3 (2.6)	0	0.247

Values are expressed as median (range) or n (%).

EP, epithelium; LPM, lamina propria mucosae; MM, muscularis mucosae; SM, submucosa.