RT Journal Article T1 Phenotypic characterisation of early COPD: a prospective case-control study. A1 Cosío, Borja G A1 Pascual-Guardia, Sergi A1 Borras-Santos, Alicia A1 Peces-Barba, Germán A1 Santos, Salud A1 Vigil, Laura A1 Soler-Cataluña, Juan José A1 Martínez-González, Cristina A1 Casanova, Ciro A1 Marcos, Pedro J A1 Alvarez, Carlos J A1 López-Campos, José Luis A1 Gea, Joaquim A1 Garcia-Aymerich, Judith A1 Molina, Jesús A1 Román, Miguel A1 Moises, Jorge A1 Szabo, Viktoria A1 Reagan, Elizabeth A A1 San José Estépar, Raúl A1 Washko, George A1 Agustí, Alvar A1 Faner, Rosa AB The phenotypic characteristics of chronic obstructive pulmonary disease (COPD) in individuals younger than 50 years of age (early COPD) are not well defined. This prospective, multicentre, case-control study sought to describe these characteristics and compare them with those of smokers (≥10 pack-years) of similar age with normal spirometry (controls). We studied 92 cases (post-bronchodilator forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) SN 2312-0541 YR 2020 FD 2020-10-05 LK https://hdl.handle.net/10668/27811 UL https://hdl.handle.net/10668/27811 LA en DS RISalud RD Apr 18, 2025