Table 5: Sensitivity, Specificity, Positive Predictive Value (PPV), and Negative Predictive Value (NPV) Q-SIT using different cutoff point scores in relation to subjectively reported smell impairment.
Q-SIT Sensitivity Specificity PPV NPV
Abnormal score with cutoff score ≤ 2 75.5% 69.9% 37.7% 92%
Abnormal score with cutoff score ≤ 1 69.9% 96.8% 84% 93%