Sensitivity (95% CI)Specificity (95% CI)PPV (95% CI)NPV (95% CI)
Pit Pattern 96.0 (91.5–98.5)% 98.3 (94.1–99.8)% 98.6 (94.8–99.7)% 95.2 (89.9–97.7)%
Vessel Pattern 94.7 (89.8–97.7)% 93.3 (87.3–97.1)% 94.7 (90.1–97.2)% 95.2 (89.9–97.7)%
Colour 86.7 (80.2–91.7)% 78.3 (69.9–85.3)% 83.3 (78.0–87.6)% 82.5 (75.6–87.7)%