Comparative Effectiveness of Umeclidinium/Vilanterol versus Indacaterol/Glycopyrronium on Moderate-to-Severe Exacerbations in Patients with Chronic Obstructive Pulmonary Disease in Clinical Practice in England
Bibliographic record
Abstract
Purpose: Chronic obstructive pulmonary disease (COPD) exacerbations are associated with significant morbidity and mortality and increased economic healthcare burden for patients with COPD. Long-acting muscarinic antagonist (LAMA)/long-acting β 2 -agonist (LABA) dual therapy is recommended for patients receiving mono-bronchodilator therapy who experience exacerbations or ongoing breathlessness. This study compared two single-inhaler LAMA/LABA dual therapies, umeclidinium/vilanterol (UMEC/VI) and indacaterol/glycopyrronium (IND/GLY), on moderate-to-severe exacerbation rates in patients with COPD in England. Patients and Methods: This retrospective cohort study used linked primary care electronic health record data (Clinical Practice Research Datalink-Aurum) and secondary care data (Hospital Episode Statistics) to assess outcomes for patients with COPD who had a first prescription for single-inhaler UMEC/VI or IND/GLY (index date) between 1 January 2015 and 30 September 2019 (indexing period). Analyses compared UMEC/VI and IND/GLY on moderate-to-severe, moderate, and severe exacerbations, healthcare resource utilization (HCRU), and direct costs at 6, 12, 18, and 24 months, and time-to-first on-treatment exacerbation up to 24 months post-index date. Following inverse probability of treatment weighting (IPTW), non-inferiority and superiority of UMEC/VI versus IND/GLY were assessed. Results: In total, 12,031 patients were included, of whom 8753 (72.8%) were prescribed UMEC/VI and 3278 (27.2%) IND/GLY. After IPTW, for moderate-to-severe exacerbations, weighted rate ratios were < 1 at 6, 12, and 18 months and equal to 1 at 24 months for UMEC/VI; around the null value for moderate exacerbations and < 1 at all timepoints for severe exacerbations. UMEC/VI showed lower HCRU incidence rates than IND/GLY for all-cause Accident and Emergency visits and COPD-related inpatient stays and associated all-cause costs at 6 months post-indexing. Time-to-triple therapy was similar for both treatments. Conclusion: UMEC/VI demonstrated non-inferiority to IND/GLY in moderate-to-severe exacerbation reduction at 6, 12 and 18 months. These results support previous findings demonstrating similarity between UMEC/VI and IND/GLY on reduction of moderate-to-severe exacerbations. Plain Language Summary: Sudden exacerbations, or flare-ups, of chronic obstructive pulmonary disease (COPD) are linked with worsening health and increased risk of death, as well as increased healthcare costs for people with COPD. Long-acting muscarinic antagonist (LAMA)/long-acting β 2 -agonist (LABA) dual therapy is recommended for patients with COPD who take LAMA or LABA monotherapy but continue to experience flare-ups or ongoing breathlessness. This study compared two single-inhaler LAMA/LABA dual therapies, umeclidinium/vilanterol (UMEC/VI) and indacaterol/glycopyrronium (IND/GLY), in terms of flare-ups in patients with COPD in England. We used two linked databases of de-identified medical records from general practitioners and hospitals for patients with COPD who had a first prescription for UMEC/VI or IND/GLY between 1 January 2015 and 30 September 2019. We compared the two treatments on COPD flare-ups, healthcare resource utilization and related costs, and changes in medication over the 2 years following starting treatment. We found that the treatments were comparable for moderate-to-severe flare-ups. Patients taking UMEC/VI had less Accident and Emergency (A&E) visits in total and less inpatient stays related to their COPD, and had a lower overall cost of healthcare for A&E visits and inpatient stays than patients taking IND/GLY. Changes to treatment and time before their first flare-up were similar for all patients, regardless of their prescribed treatment. This study showed that UMEC/VI is as effective as IND/GLY at preventing moderate-to-severe flare-ups. These results support previous findings demonstrating similarity between UMEC/VI and IND/GLY in reducing the rate of moderate-to-severe exacerbations after starting treatment. Keywords: COPD dual therapy, LABA/LAMA new users, healthcare resource utilization, exacerbations, comparative effectiveness, single-inhaler dual therapy
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".