Correlation coefficients between altitude and mortality rates for diseases of the respiratory system, pneumonia, and chronic lower respiratory disease and adjusted R<sup>2</sup> values for multivariate linear regression models with or without altitude for all counties.

<p>Correlation coefficients between altitude and mortality rates for diseases of the respiratory system, pneumonia, and chronic lower respiratory disease and adjusted R<sup>2</sup> values for multivariate linear regression models with or without altitude for all counties.</p>