Table 4.

Statistics for Performance of the Three Criteria Applied to the Data Set (n = 961)

Symptoms	TP	TN	FP	FN	Sensitivity	Specificity	PPV	NPV	PLR	AUC
Fever, loss of taste or smell	200	354	382	25	0.89 (0.85–0.93)	0.48 (0.44–0.52)	0.34 (0.31–0.38)	0.93 (0.91–0.96)	1.71 (1.57–1.86)	0.75 (0.71–0.78)
Fever, difficulty breathing or dry cough	210	66	670	15	0.93 (0.90–0.97)	0.09 (0.07–0.11)	0.24 (0.21–0.27)	0.81 (0.73–0.90)	1.03 (0.98–1.07)	0.63 (0.59–0.67)
Fever, difficulty breathing, dry cough, loss of taste or smell	220	58	678	5	0.98 (0.96–1.00)	0.08 (0.06–0.10)	0.24 (0.22–0.27)	0.92(0.85–0.99)	1.06 (1.03–1.09)	0.77 (0.73–0.80)

For TP, TN, FP, and FN value is number of case. For sensitivity, specificity, PPV, NPV, PLR, and AUC value is shown with 95% CI.

TP = true positive; TN = true negative; FP = false positive; FN = false negative; PPV = positive predictive value; NPV = negative predictive value; PLR = positive likelihood ratio; AUC = area under the curve.