Table 2: Performance of the PC-SAD

Major Depressive Disorder Dysthymic Disorder
Sensitivity (95% CI) 89.8 (79.6-95.5) 77.8 (40.2-96.0)
Specificity (95% CI) 82.6 (78.1-86.4) 79.0 (74.6-82.8)
PPV (95% CI) 51.2 (42.0-60.4) 7.7 (3.4-15.7)
NPV (95% CI) 97.6 (94.8-98.9) 99.4 (97.5-99.9)
LR+ (95% CI) 5.2 (4.0-6.6) 3.7 (2.5-5.5)
LR- (95% CI) 0.12 (0.06-0.24) 0.28 (0.08-0.96)

CI = Confidence intervalPPV = Positive predictive valueNPV = Negative predictive valueLR+ = Likelihood ratio for a positive resultLR- = Likelihood ratio for a negative result