Table 3 Diagnostic performance of CT Chest compared to biological testing (BT) of COVID-19
From: Submillisievert CT chest for COVID-19 patients in a rural hospital with limited resources
N = | CT + BT + | CT-BT- | CT + BT- | CT-BT + | Se | Sp | PPV | NPV | Accuracy (%) | |
|---|---|---|---|---|---|---|---|---|---|---|
RT-PCT or Ag test | ||||||||||
FDCT | 69 | 47 | 12 | 7 | 3 | 94% | 63.2% | 87% | 80% | 85.5 |
LDCT | 99 | 73 | 7 | 12 | 7 | 91.2% | 36.8% | 85.9% | 50% | 80.8 |
RT-PCR | ||||||||||
FDCT | 27 | 14 | 9 | 3 | 1 | 93.3% | 75% | 82.3% | 90% | 85.2 |
LDCT | 27 | 22 | 0 | 2 | 3 | 88% | NC | 91.7% | NC | 81.5 |
Ag test | ||||||||||
FDCT | 42 | 33 | 4 | 3 | 2 | 94.3% | 57.1% | 91.7% | 66.7% | 88.1 |
LDCT | 72 | 51 | 7 | 10 | 4 | 92.7% | 41.1% | 83.6% | 63.6% | 80.6 |