Retrospective Study
Copyright ©The Author(s) 2024.
World J Gastrointest Endosc. Jun 16, 2024; 16(6): 335-342
Published online Jun 16, 2024. doi: 10.4253/wjge.v16.i6.335
Table 2 Colorectal cancer screening metrics before and after the implementation of artificial intelligence, n (%)

Pre-AI (n = 278) (A)
Post-AI early (n = 255) (B)
Post-AI established (n = 285) (C)
Post-AI late (n = 190) (D)
P value(A vs B)
P value(A vs C)
P value(A vs D)
Bowel preparation quality
Excellent111 (39.9)106 (41.6)95 (33.3)63 (33.2)0.700.100.14
Good 124 (44.6)108 (42.4)121 (42.5)76 (40.0)0.600.610.32
Fair40 (14.4)36 (14.1)61 (21.4)43 (22.6)0.930.030.02
Unspecified3 (1.1)5 (2.0)8 (2.8)8 (4.2)0.400.320.03
Total number of polyps detected (polyps per colonoscopy)364 (1.3)419 (1.6)373 (1.3)235 (1.2)
Total number of adenomas detected (adenomas per colonoscopy)211 (0.8)253 (1.0)227 (0.8)138 (0.7)
Polyp size
< 5 mm236 (64.8)277 (66.1)277 (74.3)161 (68.5)0.710.0050.35
5 mm-10 mm66 (18.1)91 (21.7)50 (13.4)43 (18.3)0.210.080.96
> 10 mm59 (16.2)51 (12.2)41 (11.0)30 (12.8)0.100.040.25
Unspecified3 (0.8)0 (0.0)5 (1.3)1 (0.4)0.060.500.56
Polyp detection rate166/278 (59.7)152/255 (59.6)161/285 (56.5)116/190 (61.1)0.980.440.77
Adenoma detection rate106/278 (38.1)107/255 (42.0)114/285 (40.0)75/190 (39.5)0.370.650.77
Advanced adenoma1 detection rate45/278 (16.2)44/255 (17.3)43/285 (15.1)33/190 (17.4)0.740.720.74
Non-neoplastic polyp2 detection rate83/278 (30.0)89/255 (34.9)77/285 (27.0)58/190 (30.5)0.210.460.88