Research Article
Development and Relevance of Hypercapnia in COPD
Table 2
Multiple regression analysis assessing hypercapnia.
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The ORs shown represent the effect of increasing FEV1 by 1% of predicted, and DLCO, by 1% predicted, having emphysema not, using LTOT not, increasing age by 1 year, and current smoking not. p = percent predicted. |