The Learning Curve of Gastric Intestinal Metaplasia Interpretation on the Images Obtained by Probe-Based Confocal Laser Endomicroscopy

Table 2

Representing accuracy, sensitivity, specificity, and Fleiss’ kappa in overall assessment by the beginners.

	First test	Second test	Third test	Fourth test
Sensitivity (%) (range)	83.3 (75, 100)	96.3 (81.8, 100)	93.2 (88.8, 100)	97.5 (87.5, 100)
Specificity (%) (range)	71.6 (66.6, 91.6)	84.3 (77.7, 88.8)	72.7 (45.4, 81.8)	86.6 (75.0, 91.6)
Accuracy (%) (range)	81 (70, 95)	91 (85, 95)	82 (70, 85)	91 (85, 95)
Agreement (Fleiss’ kappa)	0.44 (moderate)	0.82 (Almost perfect)	0.52 (Substantial)	0.86 (Almost perfect)