Table 3.

Bivariate Correlation With Age

Correlation
Variable	Correlation	Significance
Weight, kg	−0.37	0.02*
BMI, kg/m2	−0.39	0.01*
Resting
Systolic BP, mm Hg	0.38	0.02*
Cardiac output, L/min	−0.50	0.001*
SVR, mm Hg/min per mL−1	0.36	0.022*
Mixed venous O2 saturation, %	−0.39	0.02*
Arteriovenous oxygen difference	0.40	0.013*
O2 delivery	−0.48	0.002*
O2 extraction ratio, %	0.42	0.009*
Exercise
Exercise duration, min	0.07	0.66
Mean PAP, mm Hg	0.30	0.063
Mean PCWP, mm Hg	0.35	0.03*
Cardiac output, L/min	−0.25	0.12
SVR, mm Hg/min per mL−1	0.18	0.269
Mixed venous O2 saturation, %	−0.46	0.004*
Arteriovenous oxygen difference	0.44	0.006*
Oxygen extraction ratio, %	0.484	0.002*

Statistical significance was determined at *P<0.05. BMI indicates; BP, blood pressure; O₂, oxygen; PAP, pulmonary artery pressure; PCWP, pulmonary capillary wedge pressure; SVR, systemic vascular resistance.