Table 2.

Diagnostic accuracy of 6-zone lung ultrasound

Lung pattern	LU/CT	CT +	CT -	Sensitivity (95% CI)	Specificity (95% CI)	LR + (95% CI)	LR—(95% CI)
Consolidation	LU +	118	12	0.76 (0.68 to 0.82)	0.92 (0.87 to 0.96)	9.8 (5.6 to 17.0)	0.26 (0.20 to 0.35)
	LU-	38	143
Interstitial syndrome	LU +	48	24	0.60 (0.48 to 0.71)	0.69 (0.58 to 0.79)	2.0 (1.3 to 2.9)	0.58 (0.43 to 0.78)
	LU-	32	54
Pneumothorax	LU +	10	4	0.59 (0.33 to 0.82)	0.97 (0.93 to 0.99)	20.7 (7.3 to 58.9)	0.42 (0.24 to 0.75)
	LU-	7	137
Pleural effusion	LU +	94	10	0.85 (0.77 to 0.91)	0.77 (0.62 to 0.88)	3.7 (2.1 to 6.4)	0.19 (0.12 to 0.31)
	LU-	16	33

Table depicting primary outcome, i.e., the diagnostic accuracy of a 6-zone lung ultrasound protocol. Two-by-two contingency Tables are displayed for consolidation, interstitial syndrome, pneumothorax and pleural effusion. A positive outcome for each outcome is denoted by a ‘ + ’, whereas a negative outcome is denoted by a ‘- ‘. Diagnostic accuracy parameters are estimated with their respective 95% confidence interval. LU: lung ultrasound; CT: computed tomography; CI: confidence interval; LR + : positive likelihood ratio; LR -: negative likelihood ratio