Table 4 The associations between blood gas/ultrasonic indicators and presentation of symptoms from logistic regression models (N = 551)

Dyspnea

0.02 (0.00–0.47)

0.99 (0.99–1.00)

1.04 (1.02–1.06)

1.01 (0.97–1.04)

0.93 (0.78–1.11)

1.63 (1.28–2.07)

Tachypnea

0.01 (0.00–0.20)

1.00 (0.99–1.00)

1.04 (1.02–1.06)

1.01 (0.98–1.04)

1.00 (0.84–1.20)

1.61 (1.27–2.03)

Hemoptysis

0.35 (0.01–16.29)

1.00 (0.99–1.01)

1.00 (0.99–1.02)

0.94 (0.84–1.07)

0.96 (0.73–1.26)

1.25 (0.91–1.70)

Pleuritic pain

0.46 (0.01–38.43)

1.00 (0.99–1.01)

1.00 (0.98–1.02)

0.90 (0.78–1.04)

1.09 (0.81–1.48)

0.91 (0.61–1.35)

Hydrothorax

0.05 (0.00–0.86)

1.00 (0.99–1.00)

1.02 (1.00–1.03)

1.01 (0.98–1.04)

0.90 (0.73–1.10)

1.88 (1.48–2.39)

Syncope

0.01 (0.00–0.16)

1.01 (1.00–1.02)

0.99 (0.96–1.01)

1.01 (0.98–1.05)

0.87 (0.66–1.15)

0.67 (0.47–0.95)

Hypoxia

0.16 (0.01–2.51)

0.95 (0.94–0.96)

1.04 (1.02–1.06)

1.04 (0.98–1.10)

1.25 (1.04–1.50)

1.13 (0.91–1.40)

Fever

5.91 (0.18–197.85)

1.00 (0.99–1.01)

0.99 (0.97–1.01)

0.99 (0.95–1.04)

1.01 (0.82–1.25)

0.72 (0.55–0.94)

Cough

0.32 (0.02–5.1)

1.00 (0.99–1.00)

1.05 (1.03–1.06)

1.00 (0.97–1.03)

0.92 (0.76–1.10)

1.19 (0.95–1.49)

Edema in lower extremities

0.14 (0.01–2.18)

1.00 (0.99–1.00)

1.01 (0.99–1.02)

0.99 (0.95–1.03)

0.96 (0.78–1.17)

1.43 (1.13–1.81)