Evaluation of preferable insertion routes for esophagogastroduodenoscopy using ultrathin endoscopes

Table 1 Profiles of all patients

	Patients who underwent 1st EGD	Patients who underwent 2nd or subsequent EGD	P value
Gender			NS
Male	98	1060
Female	82	731
Operator			NS
a	128	1144
b	49	599
c	0	28
d	2	16
e	1	4
Age group (yr)	49.3 ± 13.2 54	58.3 ± 11.5	< 0.05
< 39	39	115
40-49	45	320
50-59	29	464
60-69	13	588
> 70		304
Insertion route			< 0.05
Transnasal	139	1255
Transoral	41	536
VAS score	4.50 ± 2.33	4.11 ± 2.35	< 0.05
Examination time (s)			NS
	306.0 ± 60.0	302.1 ± 61.8
Type of scope			NS
a	78	690
b	66	739
c	19	162
d	8	69
e	4	36
f	3	67
g	2	28

EGD: Esophagogastroduodenoscopy; VAS: Visual analog scale score; NS: Not significant.