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Table 2 Performance characteristics of SIAscopy for the diagnosis of 'suspicious' in the different datasets of lesions.

From: Accuracy of SIAscopy for pigmented skin lesions encountered in primary care: development and validation of a new diagnostic algorithm

  Development dataset (Moncrieff scoring system) UK validation dataset (PCSA) Australian validation dataset (PCSA)
Sensitivity (95% CI) 0.54 (0.35 - 0.72) 0.50 (0.18-0.81) 0.44 (0.32-0.58)
Specificity (95% CI) 0.77 (0.73 - 0.81) 0.84 (0.78-0.88) 0.95 (0.93-0.97)
Positive predictive value (95% CI) 0.12 (0.075 - 0.20) 0.09 (0.03-0.22) 0.52 (0.38-0.66)
Negative predictive value (95% CI) 0.96 (0.93 - 0.98) 0.98 (0.95-0.99) 0.95 (0.92-0.96)