Table 2.

Classification results of health volunteers (n=20) and patients (n=259) with various stages of keratoconus on the testing sets

Healthy versus rest	Accuracy	Sensitivity	Specificity	AUC
Axial map	0.9283 (0.9032 to 0.9534)	1.0 (1.0 to 1.0)	0.0 (0.0 to 0.0)	0.5 (0.5 to 0.5)
Thickness map	0.9642 (0.9462 to 0.9821)	0.9768 (0.9612 to 0.9922)	0.8 (0.6316 to 0.9412)	0.8884 (0.8046 to 0.9583)
Front elevation map	0.9642 (0.9427 to 0.9821)	0.9884 (0.9766 to 1.0)	0.65 (0.4706 to 0.8261)	0.8192 (0.7292 to 0.9080)
Back elevation map	0.9749 (0.9570 to 0.9892)	0.9846 (0.9695 to 0.9962)	0.85 (0.7083 to 0.9667)	0.9173 (0.8453 to 0.9793)
Concatenated	0.9785 (0.9642 to 0.9928)	0.9846 (0.9699 to 0.9962)	0.9 (0.7692 to 1.0)	0.9423 (0.8773 to 0.9942)
Majority voting	0.9749 (0.9570 to 0.9892)	0.9884 (0.9767 to 1.0)	0.8 (0.6364 to 0.9375)	0.8942 (0.8115 to 0.9641)

95% CI in brackets.

AUC, area under the curve.