Factors associated with mortality in patients with COPD and pneumonia: univariate analysis.

<p>DM, diabetes mellitus; FEV1: Forced expiratory volume in the first second; ICU: Intensive care unit; IQR, interquartile range; PSI, pneumonia severity index.</p>1<p>Data available only for 52 patients and 790 patients respectively; ²Patients were stratified into the following risk classes according to the PSI score: low risk (≤90 points, classes I, II, and III) and high risk (>90 points, classes IV and V).</p><p>Factors associated with mortality in patients with COPD and pneumonia: univariate analysis.