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Table 5 Performance characteristics of PCR and lymphopenia in relation to CT chest

From: CO-RADS score and its correlation with clinical and laboratory parameters in patients with COVID-19

 

Lymphopenia

RT-PCR + lymphopenia

Sensitivity (%)

63.6

88.6

Specificity (%)

91.7

91.7

PPV (%)

98.2

88.6

NPV (%)

25.6

91.7

Accuracy (%)

67.0

89.0

  1. RT-PCR Real-time polymerase chain reaction, PPV Positive predictive value, NPP Negative predictive value