Table 1.

Sensitivity and specificity and ROC-AUC (Az) calculated for different cut-off values and modalities

Observer and modality	Cut-off histology = 1, ICDAS = 1		Cut-off histology = 3, ICDAS = 4,
	Sensitivity	Specificity	Az	Sensitivity	Specificity
Obs. 1, tooth	0.94	0.44	0,89	1.00	0.27
Obs. 2, tooth	0.72	0.48	0,9	0.97	0.52
Obs. 1, photo	0.86	0.56	0.88	0.97	0.41
Obs. 2, photo	0.94	0.41	0.84	0.97	0.24
Obs. 3, photo	0.77	0.63	0.80	0.84	0.45
Obs. 4, photo	1.00	0.19	0.84	1.00	0.08