Colorectal polyp size measurement comparing biopsy forceps with visual assessment during real-time colonoscopy: A prospective, multicenter, international study

Table 3 Polyp size misclassification using biopsy forceps-assisted size measurement and visual assessment compared to the reference laser-based size measurements

Polyp size misclassifications, n/N (%)1	BF	VA
> 5 mm2 as ≤ 5 mm	3/22 (13.6)	3/22 (13.6)
≤ 5 mm as > 5 mm	13/115 (11.3)	13/115 (11.3)
≥ 10 mm as < 10 mm3	2/4 (50.0)	2/4 (50.0)
< 10 mm as ≥ 10 mm	3/133 (2.3)	4/133 (3.0)

¹n = number of polyps misclassified by biopsy forceps and/or visual assessment and N = number of polyps in the respective size category based on the reference laser-based size measurements.

²> 5 mm category is the 6-9 mm category combined with the ≥ 10 mm category.

³< 10 mm category is the ≤ 5 mm category combined with the 6-9 mm category.

BF: Biopsy forceps; VA: Visual assessment.