Table 3 Summary of average algorithm sensitivities and specificities for differentiating between low risk (normal and low grade dysplasia) and high risk (high grade dysplasia and cancer) sites.

	Leave one out	Block validation
		Mean	95% CI
Sensitivity (%)	92%	87%	86–88%
Specificity (%)	60%	59%	59–60%
Area under the curve (%)	85%	82%	81–83%