Evaluation of preferable insertion routes for esophagogastroduodenoscopy using ultrathin endoscopes

Table 2 Univariate and multivariate analyses against the visual analog scale scores in patients who underwent 1^st esophagogastroduodenoscopy

Patients who underwent 1st EGD	VAS score	Univariate	Multivariate
Gender		P < 0.05	P < 0.05
Male	4.02 ± 2.15
Female	5.06 ± 2.42
Operator		NS	NS
a	4.47 ± 2.30
b	4.51 ± 2.49
c	-
d	6
e	4
Age group		NS	NS
< 39	4.93 ± 2.12
40-49	4.44 ± 2.54
50-59	4.11 ± 2.33
60-69	4.34 ± 2.18
> 70	4.54 ± 2.93
Insertion route		NS	NS
Transnasal	4.50 ± 2.26
Transoral	4.46 ± 2.59
Examination time (s)		P < 0.05	NS
	r2 = 0.0336
Type of scope		NS	NS
a	4.60 ± 2.36
b	4.76 ± 2.33
c	3.95 ± 2.41
d	3.13 ± 1.64
e	5.25 ± 2.75
f	2.33 ± 1.53
g	4

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