Impact of Scoring Single or Multiple Occlusal Lesions on Estimates of Diagnostic Accuracy of the Visual ICDAS-II System

Table 4

The area under the ROC curve, optimum sensitivity and specificity and corresponding ICDAS-II threshold used, for each examiner at 𝐷₁ and 𝐷₃ diagnostic threshold.

	Examiner 1			Examiner 2			Examiner 3			Examiner 4
	All data		Randomised	All data		Randomised	All data		Randomised	All data		Randomised
			data			data			data			data
𝐷1 diagnostic threshold
Opt Sens	0.70		0.68	0.69		0.66	0.57		0.49	0.71		0.71
Opt Spec	0.83		0.90	0.81		0.80	0.78		0.74	0.73		0.80
ICDAS cut-off		1-2			1-2			1-2			1-2
AUC (SE)	0.81 (0.04)		0.82 (0.06)	0.80 (0.04)		0.77 (0.07)	0.72 (0.05)		0.67 (0.07)	0.79 (0.04)		0.80 (0.06)
95% CI	0.72–0.89		0.69–0.94	0.72–0.88		0.64–0.89	0.63–0.81		0.53–0.82	0.71–0.87		0.68–0.92
ES for AUC	0.03			0.07			0.08			0.01
𝐷3 diagnostic threshold
Opt Sens	0.71		0.63	0.60		0.54	0.54		0.42	0.75		0.71
Opt Spec	0.88		0.85	0.87		0.83	0.90		0.89	0.80		0.85
ICDAS cut-off		2-3			2-3			2-3			2-3
AUC (SE)	0.85 (0.03)		0.81 (0.06)	0.84 (0.03)		0.81 (0.05)	0.83 (0.03)		0.78 (0.06)	0.86 (0.03)		0.84 (0.05)
95% CI	0.79–0.92		0.69–0.92	0.78–0.91		0.70–0.92	0.76–0.90		0.66–0.90	0.80–0.92		0.75–0.94
ES for AUC	0.11			0.08			0.15			0.05

AUC: Area under the curve; SE: Standard error; CI: Confidence interval, ES: Effect size.