Table 2.

Diagnostic accuracy of the LUS score on the 7th and 28th DOL for the primary (moderate–severe BPD, sBPD) and secondary outcomes (BDP of any grade and CPAP dependency on the 28th DOL).

	AUC (95% CI)	Optimal cutoff	Se	Sp	LR+	LR−
LUS score (7th DOL)
sBPD	0.94 (0.87–1)	≥8	93	91	10.3	0.07
Any grade BPD	0.93 (0.86–1)	≥5	90	81	3.6	0.12
CPAP dependency	0.89 (0.74–1)	≥9	89	91	9.9	0.12
LUS score (28th DOL)
sBPD	0.92 (0.83–1)	≥6	85	82	4.7	0.18
Any grade BPD	0.96 (0.9–1)	≥4	95	86	6.8	0.06
CPAP dependency	0.97 (0.91–1)	≥8	100	91	11.1	0

Se sensitivity, Sp specificity, LR+ positive likelihood ratio, LR− negative likelihood ratio.