Clinical and functional characteristics of COPD patients at first hospital admission (Spain, 2004–2006).

<p>Abbreviation<i>: mMRC</i>, Modified Medical Research Council; Number (%) is given, unless otherwise indicated.</p><p>*Chronic cough with phlegm;</p>†<p>Scores range from 0 (no health impairment) to 100 (maximum impairment).</p

Associations between cumulative lifetime occupational exposure and clinical and functional outcome.

<p>Abbreviations: GOLD, Global Initiative for Chronic Obstructive Lung Disease; MMRC, Modified Medical Research Council; SGRQ, St George’s Respiratory Questionnaire.</p><p>Multivariate logistic or linear regression models, adjusted for sex, age, age 2, weight, smoking status, and pack-years smoked. Referral category for all comparisons includes participants with no history of high exposure to biological dust, mineral dust, or gases/fumes (n = 110; see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0088426#pone-0088426-t002" target="_blank">Table 2</a>).</p><p>* As compared to MMRC dyspnea scale 0, 1 or 2.</p>†<p>As compared to GOLD Stage.</p

Associations between lifetime occupational exposures and DLCO, stratified according to smoking history.

<p>Linear regression models adjusted for sex, age, age2, weight and pack-years smoked. The reference category for all comparisons included participants with no history of high exposure to biological dust, mineral dust, or gases/fumes (n = 110; see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0088426#pone-0088426-t002" target="_blank">Table 2</a>).</p