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| Number of ACF detected with IEE | Number of ACF detected with methylene blue | Detection rate (95 %CI) | |
| IEE | 503 | 616 | 81.7 (78.8 – 84.6) |
| NBI | 245 | 312 | 78.5 (75.3 – 81.7) |
| BLI | 258 | 304 | 84.9 (80.4 – 89.4) |
Detection rate was expressed as percentage (%). ACF, aberrant crypt foci; IEE, image-enhanced endoscopy; NBI, narrow-band imaging; BLI, blue laser imaging; CI, confidence interval.
