Amaral, Andre F.Burney, Peter G.Patel, JayminiMinelli, CosettaMejza, FilipMannino, David M.Seemungal, Terence A.Mahesh, Padukudru AnandLo, Li CherJanson, ChristerJuvekar, SanjayDenguezli, MeriamHarrabi, ImedWouters, Emiel F.Cherkaski, HamidMortimer, KevinJogi, RainBateman, Eric D.Fuertes, ElaineAl Ghobain, MohammedTan, WanObaseki, Daniel O.El Sony, AsmaStudnicka, MichaelAquart-Stewart, AltheaKoul, ParvaizLawin, HerveNafees, Asaad AhmedAwopeju, OlayemiErhabor, Gregory E.Gislason, ThorarinnWelte, TobiasGulsvik, AmundNielsen, RuneGnatiuc, LouisaKocabas, AliMarks, Guy B.Sooronbaev, TalantMbatchou Ngahane, Bertrand HugoBarbara, CristinaBuist, A. SoniaBOLD Collaborative Research GroupDias, HermÃnia Brites2023-05-232023-05-232021-12Amaral AF, Burney PG, Patel J, Minelli C, Mejza F, Mannino DM, et al; BOLD Collaborative Research Group [Dias HB]. Chronic airflow obstruction and ambient particulate air pollution. Thorax. 2021;76(12):1236-41.http://hdl.handle.net/10400.21/16110Smoking is the most well-established cause of chronic airflow obstruction (CAO) but particulate air pollution and poverty have also been implicated. We regressed the sex-specific prevalence of CAO from 41 Burden of Obstructive Lung Disease study sites against smoking prevalence from the same study, the gross national income per capita, and the local annual mean level of ambient particulate matter (PM2.5) using negative binomial regression. The prevalence of CAO was not independently associated with PM2.5 but was strongly associated with smoking and was also associated with poverty. Strengthening tobacco control and improving understanding of the link between CAO and poverty should be prioritized.engChronic obstructive pulmonary diseaseEpidemiologyEnvironmental exposureAir pollutantsAir pollutionDustParticulate matterChronic airflow obstructionChronic airflow obstruction and ambient particulate air pollutionjournal article10.1136/thoraxjnl-2020-216223