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Table 3 Histological characteristic of polyps detected in the narrow-band imaging group and conventional group on a per-polyp basis.

From: Narrow-band imaging does not improve detection of colorectal polyps when compared to conventional colonoscopy: a randomized controlled trial and meta-analysis of published studies

Outcomes
(Number of polyps by histological category)
NBI group (n = 241) Conventional group (n = 241) Measurement of the intervention effect* Significance (p)
Tubular adenoma or adenomatous polyp 46 47 0.98 (0.68 to 1.41) Ns
Hyperplastic polyps 22 42 0.52 (0.32 to 0.85) 0.009
Villous adenoma 1 1 1.00 (0.06 to 15.90) Ns
Tubulovillous adenoma 1 9 0.11 (0.01 to 0.87) 0.04
Adenocarcinoma 1 1 1.00 (0.06 to 15.90) Ns
Other type of lesions 2 1 2 (0.18 to 21.91) Ns
Total number of polyps 70 99 0.71 (0.55 to 0.91) 0.006
Total number of lesions 73 101 0.71 (0.57 to 0.92) 0.009
  1. * Rate ratio (RR) and 95% CI or mean difference (MD) and 95% CI.