Table 2. Diagnostic characteristics of the included literature.
| Studies | Different grouping methods | AI systems | Expert | Nonexpert | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TP | FP | FN | TN | TP | FP | FN | TN | TP | FP | FN | TN | ||||
| Polyp detection | |||||||||||||||
| Liu WN(9) | 486 | 36 | 0 | NA | |||||||||||
| Misawa (12) | 44,472 | 5,964 | 4,668 | 88,075 | |||||||||||
| Urban (13) | 113 | 127 | 5 | NA | |||||||||||
| Qadir (20) | Dataset 1 | 180 | 28 | 28 | NA | ||||||||||
| Dataset 2 | 273 | 36 | 27 | NA | |||||||||||
| Guo (21) | Long videos | 37,938 | 5,590 | 5,672 | 78,658 | ||||||||||
| Short videos | 44 | NA | 6 | NA | 88 | 0 | 12 | 100 | 80 | 17 | 20 | 83 | |||
| Jia (22) | Architecture 1 | 524 | 116 | 122 | NA | ||||||||||
| Architecture 2 | 535 | 96 | 111 | NA | |||||||||||
| Architecture 3 | 549 | 239 | 97 | NA | |||||||||||
| Architecture 4 | 557 | 3,608 | 89 | NA | |||||||||||
| Architecture 5 | 595 | 107 | 51 | NA | |||||||||||
| Liu P (23) | 421 | 29 | 0 | NA | |||||||||||
| Poon (24) | Dataset 1 | 3,206 | 480 | 1,207 | 12,880 | ||||||||||
| Dataset 2 | 47,877 | 277,407 | 18,082 | 3,363,076 | |||||||||||
| Shin (25) | 188 | 8 | 7 | 163 | |||||||||||
| Su (26) | 177 | 62 | 0 | NA | |||||||||||
| Wang (27) | 498 | 39 | 0 | NA | |||||||||||
| Wang (28) | 501 | 50 | 0 | NA | |||||||||||
| Wang (29) | Dataset 1 | 6,233 | 1,297 | 413 | 20,691 | ||||||||||
| Dataset 2 | 55,822 | 49,334 | 5,092 | 1,023,149 | |||||||||||
| Yu (30) | 3,062 | 414 | 1,251 | NA | |||||||||||
| Zhang (31) | 3,087 | 398 | 1226 | 13,057 | |||||||||||
| Ozawa (42) | All images | 1,073 | 173 | 99 | 5,732 | ||||||||||
| WLI | 787 | 161 | 87 | 5,713 | |||||||||||
| NBI | 289 | 9 | 9 | 22 | |||||||||||
| Polyp classification | |||||||||||||||
| Byrne (32) | 65 | 7 | 1 | 33 | |||||||||||
| Chen (33) | 181 | 21 | 7 | 75 | 367 | 55 | 9 | 137 | 671 | 95 | 81 | 289 | |||
| Kominami (34) | All polyps | 70 | 3 | 3 | 42 | ||||||||||
| Polyps ≤5 mm | 40 | 3 | 3 | 42 | |||||||||||
| Kudo (35) | Polyps ≤10 mm in stained mode | 1,260 | 0 | 40 | 700 | 603 | 20 | 20 | 330 | 920 | 240 | 380 | 460 | ||
| Polyps ≤10 mm in NBI mode | 1,260 | 40 | 40 | 660 | 608 | 12 | 42 | 338 | 807 | 100 | 493 | 600 | |||
| Polyps ≤5 mm in stained mode | 960 | 0 | 40 | 680 | 453 | 20 | 47 | 320 | 690 | 236 | 310 | 444 | |||
| Mori (36) | 131 | 7 | 16 | 51 | 408 | 20 | 33 | 154 | 1,128 | 153 | 342 | 427 | |||
| Polyps ≤5 mm in NBI mode | 960 | 40 | 40 | 640 | 459 | 12 | 41 | 328 | 578 | 97 | 422 | 583 | |||
| Mori (37) | All polyps in NBI mode | 268 | 18 | 17 | 159 | ||||||||||
| All polyps in stained mode | 263 | 19 | 23 | 157 | |||||||||||
| Proximal-to-rectosigmoid polyps ≤5 mm in NBI mode | 170 | 13 | 10 | 21 | |||||||||||
| Proximal-to-rectosigmoid polyps ≤5 mm in stained mode | 167 | 14 | 9 | 24 | |||||||||||
| Rectosigmoid polyps ≤5 mm in NBI mode | 98 | 5 | 7 | 138 | |||||||||||
| Rectosigmoid polyps ≤5 mm in stained mode | 96 | 5 | 14 | 133 | |||||||||||
| Proximal-to-rectosigmoid polyps ≤5 mm in NBI mode | 167 | 9 | 12 | 21 | 300 | 12 | 58 | 48 | 278 | 20 | 80 | 40 | |||
| Rectosigmoid polyps ≤5 mm in NBI mode | 95 | 6 | 5 | 135 | 176 | 14 | 24 | 268 | 161 | 30 | 39 | 252 | |||
| Mori (38) | EC images | 126 | 8 | 11 | 31 | 254 | 7 | 20 | 71 | 224 | 19 | 50 | 59 | ||
| WLI | 126 | 8 | 11 | 31 | 242 | 26 | 32 | 52 | 228 | 34 | 46 | 44 | |||
| Patel (39) | Architecture 1 | 2,424 | 680 | 466 | 1,149 | ||||||||||
| Architecture 2 | 2,071 | 389 | 819 | 1,440 | |||||||||||
| Architecture 3 | 2,350 | 607 | 540 | 1,222 | |||||||||||
| Architecture 4 | 2,246 | 547 | 644 | 1,282 | |||||||||||
| Architecture 5 | 2,230 | 509 | 660 | 1,320 | |||||||||||
| Architecture 6 | 2,239 | 616 | 651 | 1,213 | |||||||||||
| Renner (40) | All polyps | 48 | 18 | 4 | 30 | 86 | 21 | 18 | 75 | ||||||
| Polyps ≤5 mm | 8 | 6 | 0 | 21 | 12 | 8 | 4 | 46 | |||||||
| Yamada (41) | 732 | 64 | 20 | 638 | |||||||||||
| Ozawa (42) | WLI | 562 | 64 | 14 | 59 | ||||||||||
| NBI | 197 | 31 | 5 | 37 | |||||||||||
WLI, white light imaging; EC, endocytoscopy; NBI, narrow-band imaging.