Treatment pathways, economic burden and clinical outcomes in new users of inhaled corticosteroid/long-acting B

Management of chronic obstructive pulmonary disease (COPD) with inhaled corticosteroid/long-acting β Retrospective cohort study. Primary care, England. Linked data from the Clinical Practice Research Datalink Aurum and Hospital Episode Statistics datasets. Patients with COPD and ≥1 single-device ICS/LABA prescription between July 2015 and December 2018 were included. Treatment pathways, COPD-related HCRU and healthcare costs, COPD exacerbations, time to triple therapy, medication adherence (proportion of days covered ≥80%) and indexed treatment time to discontinuation. Data for patients without prior maintenance therapy history (IMT users) and non-triple users were assessed over a 12-month follow-up period. Of 13 451 new ICS/LABA users, 5162 were IMT users (budesonide/formoterol, n=1056; beclomethasone dipropionate/formoterol, n=2427; other ICS/LABA, n=1679), for whom at 3 and 12 months post-index, 45.6% and 39.4% were still receiving any ICS/LABA. At >6 to ≤12 months, the proportion of IMT users with ≥1 outpatient visit (10.1%) and proportion with ≥1 inpatient stay (12.6%) had increased from those at 3 months (9.0% and 7.4%, respectively). Inpatient stays contributed most to total COPD-related healthcare costs. For non-triple IMT users, at 3 and 12 months post-index, 4.5% and 13.7% had ≥1 moderate-to-severe COPD exacerbation. Time to triple therapy initiation and time to discontinuation of index medication ranged from 45.9 to 50.2 months and 2.3 to 2.8 months between treatments. Adherence was low across all time points (21.5-27.6%). Results were similar across indexed therapies. In the year following treatment initiation, ICS/LABA adherence was poor and many patients discontinued or switched therapies, suggesting that more consideration and optimisation of treatment is required in England for patients initiating single-device ICS/LABA therapy.

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Déclaration de conflit d'intérêts

Competing interests: AC, GR, CC and AI are employees of GSK and hold stock and shares at GSK. AI is also an unpaid part-time Professor at McMaster University. TT, RWood and RWild are employees of Adelphi Real World, which received funding from GSK to conduct the study, but not for manuscript development. VLB was an employee of Adelphi Real World at the time of the study and is currently an employee of Bayer AG UK, and holds stock and shares in Bayer AG UK. Adelphi Real World is a business that provides consulting and other research services to pharmaceutical, device, government and non-government organisations. Adelphi Real World employees work with a variety of companies and organisations and are expressly prohibited from receiving any payment or honoraria directly from these organisations for services rendered.