COPD in Never Smokers
Background Never smokers comprise a substantial proportion of patients with COPD. Their characteristics and possible risk factors in this population are not yet well defined. Methods We analyzed data from 14 countries that participated in the international, population-based Burden of Obstructive Lun...
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Veröffentlicht in: | Chest 2011-04, Vol.139 (4), p.752-763 |
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creator | Lamprecht, Bernd, MD McBurnie, Mary Ann, MD Vollmer, William M., MD Gudmundsson, Gunnar, MD, FCCP Welte, Tobias, MD Nizankowska-Mogilnicka, Ewa, MD, FCCP Studnicka, Michael, MD, FCCP Bateman, Eric, MD Anto, Josep M., MD Burney, Peter, MD Mannino, David M., MD, FCCP Buist, Sonia A., MD |
description | Background Never smokers comprise a substantial proportion of patients with COPD. Their characteristics and possible risk factors in this population are not yet well defined. Methods We analyzed data from 14 countries that participated in the international, population-based Burden of Obstructive Lung Disease (BOLD) study. Participants were aged ≥ 40 years and completed postbronchodilator spirometry testing plus questionnaires about respiratory symptoms, health status, and exposure to COPD risk factors. A diagnosis of COPD was based on the postbronchodilator FEV1 /FVC ratio, according to current GOLD (Global Initiative for Obstructive Lung Disease) guidelines. In addition to this, the lower limit of normal (LLN) was evaluated as an alternative threshold for the FEV1 /FVC ratio. Results Among 4,291 never smokers, 6.6% met criteria for mild (GOLD stage I) COPD, and 5.6% met criteria for moderate to very severe (GOLD stage II+) COPD. Although never smokers were less likely to have COPD and had less severe COPD than ever smokers, never smokers nonetheless comprised 23.3% (240/1,031) of those classified with GOLD stage II+ COPD. This proportion was similar, 20.5% (171/832), even when the LLN was used as a threshold for the FEV1 /FVC ratio. Predictors of COPD in never smokers include age, education, occupational exposure, childhood respiratory diseases, and BMI alterations. Conclusion This multicenter international study confirms previous evidence that never smokers comprise a substantial proportion of individuals with COPD. Our data suggest that, in addition to increased age, a prior diagnosis of asthma and, among women, lower education levels are associated with an increased risk for COPD among never smokers. |
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Their characteristics and possible risk factors in this population are not yet well defined. Methods We analyzed data from 14 countries that participated in the international, population-based Burden of Obstructive Lung Disease (BOLD) study. Participants were aged ≥ 40 years and completed postbronchodilator spirometry testing plus questionnaires about respiratory symptoms, health status, and exposure to COPD risk factors. A diagnosis of COPD was based on the postbronchodilator FEV1 /FVC ratio, according to current GOLD (Global Initiative for Obstructive Lung Disease) guidelines. In addition to this, the lower limit of normal (LLN) was evaluated as an alternative threshold for the FEV1 /FVC ratio. Results Among 4,291 never smokers, 6.6% met criteria for mild (GOLD stage I) COPD, and 5.6% met criteria for moderate to very severe (GOLD stage II+) COPD. Although never smokers were less likely to have COPD and had less severe COPD than ever smokers, never smokers nonetheless comprised 23.3% (240/1,031) of those classified with GOLD stage II+ COPD. This proportion was similar, 20.5% (171/832), even when the LLN was used as a threshold for the FEV1 /FVC ratio. Predictors of COPD in never smokers include age, education, occupational exposure, childhood respiratory diseases, and BMI alterations. Conclusion This multicenter international study confirms previous evidence that never smokers comprise a substantial proportion of individuals with COPD. Our data suggest that, in addition to increased age, a prior diagnosis of asthma and, among women, lower education levels are associated with an increased risk for COPD among never smokers.</description><identifier>ISSN: 0012-3692</identifier><identifier>DOI: 10.1378/chest.10-1253</identifier><language>eng</language><subject>Pulmonary/Respiratory</subject><ispartof>Chest, 2011-04, Vol.139 (4), p.752-763</ispartof><rights>The American College of Chest Physicians</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1763-649257206c24fdb3fd32a1e42e41b1b36b4fa9ab79537ef23cc94cd5ababd5223</citedby><cites>FETCH-LOGICAL-c1763-649257206c24fdb3fd32a1e42e41b1b36b4fa9ab79537ef23cc94cd5ababd5223</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Lamprecht, Bernd, MD</creatorcontrib><creatorcontrib>McBurnie, Mary Ann, MD</creatorcontrib><creatorcontrib>Vollmer, William M., MD</creatorcontrib><creatorcontrib>Gudmundsson, Gunnar, MD, FCCP</creatorcontrib><creatorcontrib>Welte, Tobias, MD</creatorcontrib><creatorcontrib>Nizankowska-Mogilnicka, Ewa, MD, FCCP</creatorcontrib><creatorcontrib>Studnicka, Michael, MD, FCCP</creatorcontrib><creatorcontrib>Bateman, Eric, MD</creatorcontrib><creatorcontrib>Anto, Josep M., MD</creatorcontrib><creatorcontrib>Burney, Peter, MD</creatorcontrib><creatorcontrib>Mannino, David M., MD, FCCP</creatorcontrib><creatorcontrib>Buist, Sonia A., MD</creatorcontrib><title>COPD in Never Smokers</title><title>Chest</title><description>Background Never smokers comprise a substantial proportion of patients with COPD. Their characteristics and possible risk factors in this population are not yet well defined. Methods We analyzed data from 14 countries that participated in the international, population-based Burden of Obstructive Lung Disease (BOLD) study. Participants were aged ≥ 40 years and completed postbronchodilator spirometry testing plus questionnaires about respiratory symptoms, health status, and exposure to COPD risk factors. A diagnosis of COPD was based on the postbronchodilator FEV1 /FVC ratio, according to current GOLD (Global Initiative for Obstructive Lung Disease) guidelines. In addition to this, the lower limit of normal (LLN) was evaluated as an alternative threshold for the FEV1 /FVC ratio. Results Among 4,291 never smokers, 6.6% met criteria for mild (GOLD stage I) COPD, and 5.6% met criteria for moderate to very severe (GOLD stage II+) COPD. Although never smokers were less likely to have COPD and had less severe COPD than ever smokers, never smokers nonetheless comprised 23.3% (240/1,031) of those classified with GOLD stage II+ COPD. This proportion was similar, 20.5% (171/832), even when the LLN was used as a threshold for the FEV1 /FVC ratio. Predictors of COPD in never smokers include age, education, occupational exposure, childhood respiratory diseases, and BMI alterations. Conclusion This multicenter international study confirms previous evidence that never smokers comprise a substantial proportion of individuals with COPD. Our data suggest that, in addition to increased age, a prior diagnosis of asthma and, among women, lower education levels are associated with an increased risk for COPD among never smokers.</description><subject>Pulmonary/Respiratory</subject><issn>0012-3692</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNotz81KAzEUBeAsFKzVZffzAqm5SSZpNoKMPxWKFarrkGRucNrpjCRa6Ns707q6HDhczkfIDNgchF7chS_MP3NgFHgpLsiEMeBUKMOvyHXOWzZkMGpCZtX6_bFouuIND5iKzb7fYco35DK6NuPt_52Sz-enj2pJV-uX1-phRQNoJaiShpeaMxW4jLUXsRbcAUqOEjx4obyMzjivTSk0Ri5CMDLUpfPO1yXnYkro-W9Ifc4Jo_1Ozd6lowVmR4c9OU5pcAz9-3Mfh1GHBpMNbdM1wbU7PGLe9r-pG_ZasJlbZjejekQDKAZaLsQfsuBQ6A</recordid><startdate>201104</startdate><enddate>201104</enddate><creator>Lamprecht, Bernd, MD</creator><creator>McBurnie, Mary Ann, MD</creator><creator>Vollmer, William M., MD</creator><creator>Gudmundsson, Gunnar, MD, FCCP</creator><creator>Welte, Tobias, MD</creator><creator>Nizankowska-Mogilnicka, Ewa, MD, FCCP</creator><creator>Studnicka, Michael, MD, FCCP</creator><creator>Bateman, Eric, MD</creator><creator>Anto, Josep M., MD</creator><creator>Burney, Peter, MD</creator><creator>Mannino, David M., MD, FCCP</creator><creator>Buist, Sonia A., MD</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>201104</creationdate><title>COPD in Never Smokers</title><author>Lamprecht, Bernd, MD ; McBurnie, Mary Ann, MD ; Vollmer, William M., MD ; Gudmundsson, Gunnar, MD, FCCP ; Welte, Tobias, MD ; Nizankowska-Mogilnicka, Ewa, MD, FCCP ; Studnicka, Michael, MD, FCCP ; Bateman, Eric, MD ; Anto, Josep M., MD ; Burney, Peter, MD ; Mannino, David M., MD, FCCP ; Buist, Sonia A., MD</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1763-649257206c24fdb3fd32a1e42e41b1b36b4fa9ab79537ef23cc94cd5ababd5223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Pulmonary/Respiratory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lamprecht, Bernd, MD</creatorcontrib><creatorcontrib>McBurnie, Mary Ann, MD</creatorcontrib><creatorcontrib>Vollmer, William M., MD</creatorcontrib><creatorcontrib>Gudmundsson, Gunnar, MD, FCCP</creatorcontrib><creatorcontrib>Welte, Tobias, MD</creatorcontrib><creatorcontrib>Nizankowska-Mogilnicka, Ewa, MD, FCCP</creatorcontrib><creatorcontrib>Studnicka, Michael, MD, FCCP</creatorcontrib><creatorcontrib>Bateman, Eric, MD</creatorcontrib><creatorcontrib>Anto, Josep M., MD</creatorcontrib><creatorcontrib>Burney, Peter, MD</creatorcontrib><creatorcontrib>Mannino, David M., MD, FCCP</creatorcontrib><creatorcontrib>Buist, Sonia A., MD</creatorcontrib><collection>CrossRef</collection><jtitle>Chest</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lamprecht, Bernd, MD</au><au>McBurnie, Mary Ann, MD</au><au>Vollmer, William M., MD</au><au>Gudmundsson, Gunnar, MD, FCCP</au><au>Welte, Tobias, MD</au><au>Nizankowska-Mogilnicka, Ewa, MD, FCCP</au><au>Studnicka, Michael, MD, FCCP</au><au>Bateman, Eric, MD</au><au>Anto, Josep M., MD</au><au>Burney, Peter, MD</au><au>Mannino, David M., MD, FCCP</au><au>Buist, Sonia A., MD</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>COPD in Never Smokers</atitle><jtitle>Chest</jtitle><date>2011-04</date><risdate>2011</risdate><volume>139</volume><issue>4</issue><spage>752</spage><epage>763</epage><pages>752-763</pages><issn>0012-3692</issn><abstract>Background Never smokers comprise a substantial proportion of patients with COPD. Their characteristics and possible risk factors in this population are not yet well defined. Methods We analyzed data from 14 countries that participated in the international, population-based Burden of Obstructive Lung Disease (BOLD) study. Participants were aged ≥ 40 years and completed postbronchodilator spirometry testing plus questionnaires about respiratory symptoms, health status, and exposure to COPD risk factors. A diagnosis of COPD was based on the postbronchodilator FEV1 /FVC ratio, according to current GOLD (Global Initiative for Obstructive Lung Disease) guidelines. In addition to this, the lower limit of normal (LLN) was evaluated as an alternative threshold for the FEV1 /FVC ratio. Results Among 4,291 never smokers, 6.6% met criteria for mild (GOLD stage I) COPD, and 5.6% met criteria for moderate to very severe (GOLD stage II+) COPD. Although never smokers were less likely to have COPD and had less severe COPD than ever smokers, never smokers nonetheless comprised 23.3% (240/1,031) of those classified with GOLD stage II+ COPD. This proportion was similar, 20.5% (171/832), even when the LLN was used as a threshold for the FEV1 /FVC ratio. Predictors of COPD in never smokers include age, education, occupational exposure, childhood respiratory diseases, and BMI alterations. Conclusion This multicenter international study confirms previous evidence that never smokers comprise a substantial proportion of individuals with COPD. Our data suggest that, in addition to increased age, a prior diagnosis of asthma and, among women, lower education levels are associated with an increased risk for COPD among never smokers.</abstract><doi>10.1378/chest.10-1253</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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title | COPD in Never Smokers |
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