Table 4 Main ultrasound findings according to the presence of pneumonia in DT

≥ 6 B lines, adding all fields, maximum 4 B lines per lung field

35/40 (87.5%)

[S = 0.875]

5/30 (16.6%)

[Sp = 0.833]

OR = 35 p < 0.001

+LR = 5.25 (95% CI 2.34–11.79)

−LR = 0.15 (95% CI 0.07–0.34)

≥ 4 B lines or confluent B lines at least in one lung field

29/40 (72.5%)

[S = 0.725]

5/30 (16.7%)

[Sp = 0.833]

OR = 13.18 p < 0.001

+LR = 4.35 (95% CI 1.91–9.90)

−LR = 0.33 (95% CI 0.19–0.56)

≥ 3 B lines or confluent B lines in at least one lung field

34/40 (85%)

[S = 0.85]

11/30 (36.7%)

[Sp = 0.63]

OR = 9.78 p < 0.001

+LR = 2.32 (95% CI 1.42–3.78)

−LR = 0.24 (95% CI 0.11–0.52)

Irregular pleural line in at least 2 lung fields in absence of subpleural consolidation

13/29 (44.8%)

[S = 0.448]

8/30 (26.7%)

[E = 0.733]

OR = 2.23 p < 0.05

+LR = 1.68 (95% CI 0.82–3.45)

−LR = 0.75 (95% CI 0.51–1.11)

Subpleural consolidation

11/40 (27.5%)

[S = 0.275]

0/30 (0%)

+LR: NC

−LR: 0.72 (95% CI 0.60–0.89)

Condensación

0/40

0/30

NC

Pleural effusion

6/40 (15%)

2/30 (6.7%)

NS