International Journal of COPD (Jul 2022)

Single-Inhaler Triple Therapy in Patients with Advanced COPD: Bayesian Modeling of the Healthcare Resource Utilization Data and Associated Costs from the IMPACT Trial

  • Gabrio A,
  • Gunsoy NB,
  • Baio G,
  • Martin A,
  • Paly VF,
  • Risebrough N,
  • Halpin DMG,
  • Singh D,
  • Wise RA,
  • Han MK,
  • Martinez FJ,
  • Criner GJ,
  • Martin N,
  • Lipson DA,
  • Ismaila AS

Journal volume & issue
Vol. Volume 17
pp. 1633 – 1642

Abstract

Read online

Andrea Gabrio,1 Necdet B Gunsoy,2 Gianluca Baio,1 Alan Martin,3 Victoria F Paly,4 Nancy Risebrough,5 David MG Halpin,6 Dave Singh,7 Robert A Wise,8 MeiLan K Han,9 Fernando J Martinez,10 Gerard J Criner,11 Neil Martin,12 David A Lipson,13,14 Afisi S Ismaila15,16 1UCL Statistical Science, University College London, London, UK; 2Value Evidence & Outcomes, GlaxoSmithKline, Brentford, UK; 3Value Evidence and Outcomes, GlaxoSmithKline, Uxbridge, UK; 4Global HTA, Health Economics, Reimbursement & Outcomes, ICON Plc., Philadelphia, PA, USA; 5Global HTA, Health Economics, Reimbursement & Outcomes, ICON plc., Toronto, ON, Canada; 6University of Exeter Medical School, College of Medicine and Health, University of Exeter, Exeter, UK; 7The Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Manchester Academic Health Science Centre, University of Manchester, Manchester University NHS Foundation Trust, Manchester, UK; 8The Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA; 9University of Michigan, Pulmonary & Critical Care, Ann Arbor, MI, USA; 10Joan and Sandy Weill Department of Medicine, New York-Presbyterian Hospital/Weill Cornell Medical Center, New York, NY, USA; 11Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA; 12Global Medical Affairs, GlaxoSmithKline, Uxbridge, UK; 13Development Clinical Sciences, GlaxoSmithKline, Collegeville, PA, USA; 14Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; 15Value Evidence and Outcomes, GlaxoSmithKline, Collegeville, PA, USA; 16Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, CanadaCorrespondence: Afisi S Ismaila, Value Evidence and Outcomes, GlaxoSmithKline, 1250 S. Collegeville Road, Collegeville, PA, 19426-0989, USA, Tel +19199320430; +19193158229, Email [email protected]: Objectives: In the IMPACT trial (NCT02164513), triple therapy with fluticasone furoate/umeclidinium/vilanterol (FF/UMEC/VI) showed clinical benefit compared with dual therapy with either FF/VI or UMEC/VI in the treatment of chronic obstructive pulmonary disease (COPD). We used data from IMPACT to determine whether this translated into differences in COPD-related healthcare resource utilization (HRU) costs in a United Kingdom (UK) setting.Methods: In a within-trial analysis, individual patient data from the IMPACT intention-to-treat (ITT) population were analyzed to estimate rates of COPD-related HRU with FF/UMEC/VI, FF/VI, or UMEC/VI. A Bayesian approach was applied to address issues typically encountered with this kind of data, namely data missing due to early study withdrawal, subjects with zero reported HRU, and skewness. Rates of HRU were estimated under alternate assumptions of data being missing at random (MAR) or missing not at random (MNAR). UK-specific unit costs were then applied to estimated HRU rates to calculate treatment-specific costs.Results: Under each MNAR scenario, per patient per year (PPPY) rates of COPD-related HRU were lowest amongst those patients who received treatment with FF/UMEC/VI compared with those receiving either FF/VI or UMEC/VI. Although absolute HRU rates and costs were typically higher for all treatment groups under MNAR scenarios versus MAR, final economic conclusions were robust to patient withdrawals.Conclusions: PPPY rates were typically lower with FF/UMEC/VI versus FF/VI or UMEC/VI.Keywords: single-inhaler triple therapy, COPD, healthcare resource use, cost

Keywords