Table 4.

Diagnostic accuracy of Chest CT for diagnosing COVID-19 in relation to disease severity

	n (%)	Sensitivity	Specificity	PPV	NPV	LR+	LR-
Total	612 (100)	94.2	76.4	76.7	94.1	2.94	0.18
Disease severity
CURB-65 0-2	48 (7.8)	90.3	73.1	71.3	90.7	2.89	0.17
CURB-65 ≥3	654 (92.2)	100.0	57.2	56.1	100.0	2.27	0.14
SOFA score 0-1	191 (31.2)	63.5	72.7	48.4	85.1	2.13	0.44
SOFA score ≥2	421 (68.8)	99.5	69.4	76.2	96.3	2.91	0.03