Table 3.

Table showing the diagnostic test properties of various USG findings in COVID-19 patients, India.

Test	Sensitivity	Specificity	Positive Predictive Value	Negative Predictive Value
Lung USG Score > =13	93.3 (77.9, 99.2)	24.5 (17.7, 32.4)	20.6 (14.1, 28.4)	94.6 (81.8, 99.3)
Low Ejection Fraction	10.3 (2.2, 27.4)	92.3 (86.6, 96.1)	21.4 (4.7, 50.8)	83.4 (76.7, 88.9)
Slow flow (CFV or Popliteal)	60.0 (40.6, 77.3)	34.0 (26.5, 42.7)	16.1 (9.8, 24.2)	80.3 (68.2, 89.4)
Thrombosis (CFV or Popliteal)	16.7 (6.0, 34.7)	96.5 (92.0, 98.9)	50.0 (18.7, 81.3)	84.7 (78.2, 89.8)
Low ejection fraction or Thrombosis	26.7 (12.3, 45.9)	88.8 (82.5, 93.5)	33.3 (15.6, 55.3)	85.2 (78.5, 90.5)
Lung USG Score > =13 or Low ejection fraction or Thrombosis	93.0 (77.9, 99.2)	21.0 (14.6, 28.6)	19.9 (13.6, 27.4)	93.8 (79.2, 99.2)
Lung USG Score > =13 or Low ejection fraction or Thrombosis or Slow flow	96.7 (82.8, 99.9)	10.5 (5.9, 16.7)	18.5 (12.7, 25.4)	93.8 (69.8, 99.8)