Table 3.

Univariate predictors of % predicted VO₂.

Characteristic	R or difference in means	P Value
FVC	0.59	0.009
FEV1	0.03	0.12
E/e’ z score	−0.61	0.01
e’ z score	0.42	0.07
Creatinine	−0.45	0.038
Bilirubin	−0.45	0.041
Hemoglobin (g/dL)	0.47	0.048
Restrictive lung disease	−15.78	0.022
Diastolic dysfunction	−13.3	0.01
Reticulocyte count	−0.56	0.017
ECV	−0.03	0.2
Tricuspid regurgitation velocity	0.001	0.9

ECV: extracellular volume, FEV1: forced expiratory volume in the first second, FVC: forced vital capacity.