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Table 4 Multiple linear regression results for alveolar volume (VA) (5 s breath-hold)

From: The need for race-specific reference equations for pulmonary diffusing capacity for nitric oxide

N = 118 Unstandardized coefficients Standardized coefficients 95% Confidence interval for beta Collinearity statistics
Beta SE Beta t-statistic Lower bound Upper bound Tolerance VIF
Constant − 6.16 1.41   − 4.36* − 9.0 − 3.4   
Height (cm) 0.065 0.01 0.52 7.59* 0.05 0.08 0.55 1.83
Sex (0 = females; 1 = males) 0.835 0.17 0.34 5.02* 0.5 1.2 0.56 1.79
Race (0 = black; 1 = white 0.64 0.13 0.26 5.08* 0.39 0.90 0.96 1.04
  Sum of squares Df Mean square F Sig.    
ANOVA results         
Regression 129 4 43 95 0.000    
Residual 52 113 0.454   0.000    
Total 181 117       
  1. *t-statistic was statistically significant (p < 0.01); SE = standard error; Durbin–Watson Statistic = 2.38; Overall R2 = 0.71; Standard error of the estimate (SEE) = 0.67 L. Height, Sex, and Race accounted for approximately 60%, 6%, and 5% of the total variance in the model. ANOVA results were rounded to the nearest whole number except for Residual Mean Square error, which was rounded to two decimal places