Table 4. Logistic regression analysis corrected for age, sex and BMI.
| Variable | Odd ratio | 95% confidence interval | P value |
|---|---|---|---|
| SPO2 (%) | 0.718 | 0.554–0.929 | 0.012 |
| NT-pro BNP (pg·mL−1) | 1.001 | 1.000–1.002 | 0.016 |
| Hb (g·L−1) | 1.057 | 1.001–1.117 | 0.046 |
| MRAP (mmHg) | 1.284 | 1.030–1.600 | 0.026 |
| MPAP (mmHg) | 1.087 | 1.001–1.180 | 0.048 |
| CI (L·min−1·m−2) | 0.058 | 0.008–0.433 | 0.037 |
| PVR (dyn·s·cm−5) | 1.004 | 1.001–1.007 | 0.014 |
| WHO FC III–IV vs. I–II | 18.550 | 2.363–144.128 | 0.005 |
BMI, body mass index; SPO2, oxygen saturation; NT-pro BNP, N-terminal pro-brain natriuretic peptide; Hb, hemoglobin; MRAP, mean right atrium pressure; MPAP, mean pulmonary arterial pressure; CI, cardiac index; PVR, pulmonary vascular resistance; WHO FC, World Health Organization functional class.