Table 2. Characteristics of colonoscopy procedures.
| Phase 1 | Phase 2 | ||||||
| SFVE (n = 330) | FUSE (n = 330) | P value 1 | SFVE (n = 330) | FUSE (n = 330) | P value 2 | Overall P value 3 | |
| Adequate cleansing, % (n) | 86.4 % (285) | 85.2 % (281) | 0.738 | 89.1 % (294) | 88.5 % (292) | 0.805 | 0.391 |
| Cecal intubation time (sec), mean ± SD | 340 ± 164 | 379 ± 182 | 0.026 | 334 ± 220 | 383 ± 160 | < 0.01 | < 0.01 |
| Withdrawal time (sec), mean ± SD | 269 ± 83 | 289 ± 97 | < 0.01 | 386 ± 60 | 403 ± 65 | 0.020 | < 0.01 |
| Withdrawal time ≥ 6 min, % (n) | 17.0 % (56) | 28.8 % (95) | < 0.01 | 92.4 % (305) | 85.5 % (282) | < 0.01 | < 0.01 |
| ADR, % (n) | 27.3 % (90) | 33.0 % (109) | 0.127 | 33.6 % (111) | 41.8 % (138) | 0.037 | 0.001 |
| APC, mean ± SD | 0.43 ± 0.85 | 0.56 ± 1.08 | 0.071 | 0. 65 ± 1.24 | 0.71 ± 1.08 | 0.502 | 0.004 |
| Right colon ADR, % (n) | 11.2 % (37) | 12.7 % (42) | 0.632 | 16.4 % (54) | 18.9 % (62) | 0.415 | 0.023 |
| Left colon ADR, % (n) | 20.0 % (66) | 24.8 % (82) | 0.081 | 21.9 % (72) | 27.0 % (89) | 0.147 | 0.153 |
| ≤ 5 mm ADR, % (n) | 18.2 % (60) | 21.5 % (71) | 0.329 | 24.5 % (81) | 37.0 % (122) | < 0.01 | < 0.001 |
| 6 – 9 mm ADR, % (n) | 7.9 % (26) | 9.1 % (30) | 0.675 | 11.8 % (39) | 9.4 % (31) | 0.376 | 0.373 |
| > 10 mm ADR, % (n) | 5.5 % (18) | 8.5 % (28) | 0.168 | 9.1 % (30) | 7.0 % (23) | 0.390 | 0.285 |
SFVE, standard forward-viewing endoscope; FUSE, full-spectrum endoscope; ADR, adenoma detection rate; APC, adenoma per colonoscopy
1
P value SFVE vs FUSE (phase 1)
2
P value SFVE vs FUSE (phase 2)
3
P value all groups