Heterogeneity within and between physician-diagnosed asthma and/or COPD: NOVELTY cohort.

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Studies of asthma and chronic obstructive pulmonary disease (COPD) typically focus on these diagnoses separately, limiting understanding of disease mechanisms and treatment options. NOVELTY is a global, 3-year, prospective observational study of patients with asthma and/or COPD from real-world clinical practice. We investigated heterogeneity and overlap by diagnosis and severity in this cohort.Patients with physician-assigned asthma, COPD or both (asthma+COPD) were enrolled, stratified by diagnosis and severity. Baseline characteristics were reported descriptively by physician-assigned diagnosis and/or severity. Factors associated with physician-assessed severity were evaluated using ordinal logistic regression analysis.Of 11 243 patients, 5940 (52.8%) had physician-assigned asthma, 1396 (12.4%) had asthma+COPD and 3907 (34.8%) had COPD; almost half were from primary care. Symptoms, health-related quality of life and spirometry showed substantial heterogeneity and overlap between asthma, asthma+COPD and COPD, with 23%, 62% and 64% of patients, respectively, having post-bronchodilator FEV1/FVC

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Authors: Helen K Reddel, Jørgen Vestbo, Alvar Agustí, Gary P Anderson, Aruna T Bansal, Richard Beasley, Elisabeth H Bel, Christer Janson, Barry Make, Ian D Pavord, David Price, Eleni Rapsomaniki, Niklas Karlsson, Donna K Finch, Javier Nuevo, Alex de Giorgio-Miller, Marianna Alacqua, Rod Hughes, Hana Müllerová, Maria Gerhardsson de Verdier, NOVELTY study investigators