Table 2. Characteristics of routine EGDs between the fast- vs moderate- vs slow-speed endoscopist groups.

	Fast-speed endoscopists group (n = 1,052)	Moderate-speed endoscopists group (n = 1,314)	Slow-speed endoscopists group (n = 1,559)	P value
Age, median (range)	67 (18 – 92)	67 (20 – 93)	68 (18 – 92)	0.321
Sex (%) male/female	649 (62)/403 (38)	833 (63)/481 (37)	649 (62)/403 (38)	0.460
Interval between EGDs (%)				0.215
≤ 1.5 years	827 (79)	1010 (77)	1230 (79)
> 1.5 years	162 (15)	195 (15)	226 (14)
Unknown	63 (6)	109 (8)	103 (7)
Purpose of EGD (%)
Screening/surveillance	530 (50)/522 (50)	600 (46)/714 (54)	762 (49)/797 (51)	0.107
Gastric mucosal atrophy (%)
Atrophy/non-atrophy	733 (70)/319 (30)	970 (74)/344 (26)	1113 (71)/446 (29)	0.078
Past history of gastric cancer (%)
With/without	352 (33)/700 (67)	471 (36)/ 843 (64)	569 (36)/990 (64)	0.265
Past history of esophageal cancer (%)
With/without	123 (12)/929 (88)	135 (10)/1179 (90)	194 (12)/1365 (88)	0.188
Endoscope model (%)
GIF-H260 /GIF-H290Z	487 (46)/565 (54)	571 (43)/743 (57)	741 (47)/818 (53)	0.087
Light source model (%)
SPECTRUM/ELITE	487 (46)/565 (54)	571 (43)/743 (57)	718 (46)/841 (54)	0.275
UGI biopsy cases (%) Done / Not done	561 (53)/491 (47)	639 (49)/675 (51)	794 (51)/765 (49)	0.075
Intensive training (%)
< 1-year/ ≥ 1-year	0 (0)/1052 (100)	306 (23)/1008 (77)	585 (37)/974 (63)	< 0.001

EGD, esophagogastroduodenoscopy