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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.