Discrepancies in the clinical and radiological profiles of COVID-19: A case-based discussion and review of literature

Table 3 Efficacy of reverse transcriptase polymerase chain reaction, chest X-ray, computed tomography chest, and lung ultrasound in the diagnosis is of coronavirus disease-19 [16,24,43,44,69]

	Sensitivity	Specificity	PPV	NPV
RT-PCR	87.0%	97.0%	98.0%	80.0%
CXR	89.0%	60.6%	87.9%	63.1%
CT-chest	90.0%-90.7%	78.8%-91.0%	86.4%-89.0%	85.1%-92.0%
Lung US	89.0%	59.0%	47.0%	93.0%

CT: Computed tomography; RT-PCR: Reverse transcriptase polymerase chain reaction; CXR: Chest X-ray; US: Ultrasonography; PPV: Positive predictive value; NPV: Negative predictive value.