Table 2. Classifier performance
Predictor(s)OR95% CIPAUCSenstivitySpecificityPPVNPV
Step 1Changes in sense of smell or taste12.4(6.3 to 26.2)<0.00174.7%60.3%89.1%85.4%68.1%
Step 2Changes in sense of smell or taste10.6(5.3 to 23.1)<0.00181.3%60.3%89.1%85.4%68.1%
Fever, low-grade fever or shivering4.6(2.4 to 10.9)<0.001
Step 3Changes in sense of smell or taste10.2(5.0 to 22.6)<0.00184.0%86.2%69.1%74.6%82.6%
Fever, low-grade fever or shivering3.5(1.6 to 8.0)0.001
Myalgia2.5(1.3 to 4.9)0.008
Step 4Changes in sense of smell or taste10.4(5.0 to 23.0)<0.00184.5%76.7%82.7%82.4%77.1%
Fever, low-grade fever or shivering3.4(1.6 to 7.8)0.002
Myalgia1.8(0.8 to 3.9)0.119
Arthralgia2.1(0.9 to 4.7)0.082
Step 5Changes in sense of smell or taste11.1(5.3 to 25.1)<0.00185.7%82.7%80.0%81.4%81.5%
Fever, low-grade fever or shivering3.0(1.4 to 6.8)0.007
Myalgia1.6(0.7 to 3.5)0.234
Arthralgia2.2(1.0 to 5.1)0.065
Dyspnoea2.4(1.1 to 5.3)0.030
  • AUC = area under the curve. NPV = negative predictive value. PPV = positive predictive value.