Article Figures & Data
Tables
Diagnostic accuracy of chest radiograph and CTA features in patients who had undergone both a chest radiograph and a SARS-CoV-2 RT-PCR test (n = 59)
Sensitivity (95% CI) Specificity (95% CI) PPV (95% CI) NPV (95% CI) COVID-typical/indeterminate (chest radiograph)a 50% (29–71) 61% (46–74) 36% (24–51) 74% (62–82) Presence of GGO (CTA) 83% (58–96) 80% (65–91) 65% (43–83) 92% (76–98) Focal GGO (CTA) 56% (31–78) 85% (70–94) 62% (36–84) 81% (66–91) Bilateral GGO (CTA) 56% (31–78) 83% (67–92) 59% (33–81) 80% (65–91) Peripheral GGO (CTA) 78% (52–93) 85% (70–94) 70% (46–87) 90% (75–97) COVID-typical/indeterminate (CTA) 72% (46–89) 90% (76–97) 76% (50–92) 88% (74–95) Note:—PPV indicates positive predictive value; NPV, negative predictive value; GGO, ground glass opacification.
↵a COVID-typical alone gave a low sensitivity (44%) and was excluded from further analysis.
