Table 2.

Relative accuracy of measurement by each tool against true measurement per polyp size interval (comparing VSE to visual).

Relative accuracy of measurement by each tool against true measurement (percent) (95 percent CI)	VSE	VA	P value
All polyps	80.6 (80.3–83.0)	69.4 (66.1–72.4)	<0.0001
Polyp size
0–4.99 mm	76.3 (72.5–79.6)	63.3 (53.5–70.7)	0.0039
5–9.9 mm	82.3 (79.9–84.5)	65.9 (58.8–71.8	<0.0001
10–19.9 mm	83.8 (81.7–85.8)	65.9 (64.4–72.3)	<0.0001
≥20 mm	85.1 (82.4–87.5)	73.3 (69.0–77.3)	<0.0001

CI, confidence interval; VSE, virtual scale estimation; VA, visual assessment.