1. Volume 95, Issue 2, Pages 267-273 (February 1989)
Submaximal Invasive Exercise Testing and Quantitative Lung Scanning in the Evaluation for Tolerance of Lung Resection 
Gerald N. Olsen, M.D., F.C.C.P., Darryl S. Weiman, M.D., J.W. Randolph Bolton, M.D., G. David Gass, M.D., W. Campbell McLain, M.D., George A. Schoonover, M.D., F.C.C.P., Carlton A. Hornung, Ph.D., M.P.H. 
CHEST 
Volume 95, Issue 2, Pages (February 1989)
DOI: /chest
Copyright © 1989 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
Multiple regression path model considering age, extraction ratio, cardiac index (QT/m2),hemoglobin (Hgb), and PaO2 on exercise to predict V ˙ o 2 ml/kg/min and tolerance of resection. The values above the arrows are standardized partial regression (β) coefficients which indicate change in the outcome variable ( V ˙ o 2 and tolerance) in standard deviation units. The change noted in a predictor is controlled for the effects of other predictors in the equation. The curved lines indicate a correlation between pairs of predictors (full correlation matrix available upon request). The extraneous arrows to V ˙ o 2 and tolerance are illustrative of β coefficients of nondetermination (all variables not included in the model). * = non significant
CHEST  , DOI: ( /chest )
Copyright © 1989 The American College of Chest Physicians Terms and Conditions