Comparison of Rescue Medication Prescriptions in Patients with Chronic Obstructive Pulmonary Disease Receiving Umeclidinium/Vilanterol versus Tiotropium Bromide/Olodaterol in Routine Clinical Practice in England

Gema Requena,1 Alexandrosz Czira,1 Victoria Banks,2 Robert Wood,2 Theo Tritton,2 Catherine M Castillo,2 Jie Yeap,2 Rosie Wild,2 Chris Compton,1 Kieran J Rothnie,1 Felix Herth,3,4 Jennifer K Quint,5 Afisi S Ismaila6,7 1GSK, R&D Global Medical, Brentford, Middlesex, UK; 2Real-World Evidence, Adelphi Real World, Bollington, Cheshire, UK; 3Department of Pulmonology and Respiratory Care Medicine, Thoraxklinik at the University of Heidelberg, Heidelberg, Germany; 4Translational Lung Research Center Heidelberg, Member of the German Center for Lung Research DZL, Heidelberg, Germany; 5National Heart and Lung Institute, Imperial College London, London, UK; 6Value Evidence and Outcomes, GSK, Collegeville, PA, USA; 7Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, CanadaCorrespondence: Gema Requena, GSK, R&D Global Medical, Brentford, Middlesex, UK, Tel +44 20 80476893, Email gema.x.requena@gsk.comPurpose: Routinely collected healthcare data on the comparative effectiveness of the long-acting muscarinic antagonist/long-acting β2-agonist combination umeclidinium/vilanterol (UMEC/VI) versus tiotropium bromide/olodaterol (TIO/OLO) for chronic obstructive pulmonary disease (COPD) is limited. This study compared rescue medication prescriptions in patients with COPD in England receiving UMEC/VI versus TIO/OLO.Patients and Methods: This retrospective cohort study used primary care data from the Clinical Practice Research Datalink Aurum database linked with secondary care administrative data from Hospital Episode Statistics. Patients with a COPD diagnosis at age ≥ 35 years were included (indexed) following initiation of single-inhaler UMEC/VI or TIO/OLO between July 1, 2015, and September 30, 2019. Outcomes included the number of rescue medication prescriptions at 12-months (primary), and at 6-, 18- and 24-months (secondary), adherence at 6-, 12-, 18- and 24-months post-index, defined as proportion of days covered ≥ 80% (second