Physiological predictors of resting pulmonary hypertension associated with COPD: a retrospective analysis

The Egyptian Journal of Bronchology

Table 3 Regression models predicting mPAP and PVR

Model	Coefficient	Std. Error	t	p	VIF
Dependent variable: mPAP (F = 2.9, P = 0.02, R² = 0.15)
Constant Age, years PaO₂, mmHg FEV₁, %predicted FRC, %predicted	35.08 0.047 − 0.29 0.05 0.02	9.01 0.08 0.10 0.06 0.03	4.02 0.35 − 3.07 0.88 0.66	< 0.001 0.56 0.005 0.42 0.62	1.14 1.83 1.88 1.09
Dependent variable: PVR (F = 6.1, P < .001, R² = 0.27)
Constant Age, years PaO₂, mmHg FEV₁, %predicted FRC, %predicted	4.60 0.2 − 0.49 − 0.03 0.003	2.07 0.02 0.02 0.01 0.01	2.89 0.68 − 3.04 1.87 0.12	0.004 0.15 0.003 0.45 0.60	1.13 1.85 1.88 1.09

FEV₁ Forced expiratory volume in 1 s, FRC Functional residual capacity, PaO₂ Partial pressure of arterial oxygen, mPAP Mean pulmonary artery pressure, PVR Pulmonary vascular resistance