Mortality and cardiovascular and respiratory morbidity in individuals with impaired FEV1 (PURE): an international, community-based cohort study

Publication date: May 2019Source: The Lancet Global Health, Volume 7, Issue 5Author(s): MyLinh Duong, Shofiqul Islam, Sumathy Rangarajan, Darryl Leong, Om Kurmi, Koon Teo, Kieran Killian, Gilles Dagenais, Scott Lear, Andreas Wielgosz, Sanjeev Nair, Viswanathan Mohan, Prem Mony, Rajeev Gupta, Rajesh Kumar, Omar Rahman, Khalid Yusoff, Johannes Lodewykus du Plessis, Ehimario U Igumbor, Jephat ChifambaSummaryBackgroundThe associations between the extent of forced expiratory volume in 1 s (FEV1) impairment and mortality, incident cardiovascular disease, and respiratory hospitalisations are unclear, and how these associations might vary across populations is unknown.MethodsIn this international, community-based cohort study, we prospectively enrolled adults aged 35–70 years who had no intention of moving residences for 4 years from rural and urban communities across 17 countries. A portable spirometer was used to assess FEV1. FEV1 values were standardised within countries for height, age, and sex, and expressed as a percentage of the country-specific predicted FEV1 value (FEV1%). FEV1% was categorised as no impairment (FEV1% ≥0 SD from country-specific mean), mild impairment (FEV1% <0 SD to −1 SD), moderate impairment (FEV1% <–1 SD to −2 SDs), and severe impairment (FEV1% <–2 SDs [ie, clinically abnormal range]). Follow-up was done every 3 years to collect information on mortality, cardiovascular disease outcomes (including myocardial infarction, stroke, sud...
Source: The Lancet Global Health - Category: International Medicine & Public Health Source Type: research