Evidence map›Paper›PMID 25609985›Full record

ArticleJournal of asthma and allergy2015

Long-acting muscarinic antagonist use in adults with asthma: real-life prescribing and outcomes of add-on therapy with tiotropium bromide.

David Price, Alan Kaplan, Rupert Jones, Daryl Freeman, Anne Burden, Shuna Gould, Julie von Ziegenweidt, Muzammil Ali, Christine King, Mike Thomas

Open access · goldAbstract read
In one paragraph

Article in Journal of asthma and allergy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Systematic Literature Review of Systemic Corticosteroid Use for Asthma Management.American journal of respiratory and critical care medicine · 2020
    Pooled it
  2. Trial
  3. Article
  4. The new era of add-on asthma treatments: where do we stand?Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2022
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Long-acting muscarinic antagonists: a potential add-on therapy in the treatment of asthma?European respiratory review : an official journal of the European Respiratory Society · 2016
    Review
  17. Tiotropium in asthma: what is the evidence and how does it fit in?The World Allergy Organization journal · 2016
    Review
  18. Review
  19. Assessment of second-line treatments for patients with uncontrolled moderate asthma.International journal of clinical and experimental medicine · 2015
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 1 country.

David PriceAcademic Centre of Primary Care, University of Aberdeen, Aberdeen ; Research in Real-Life, Cambridge, UK.
Alan KaplanFamily Physician Airways Group of Canada, Richmond Hill, ON, Canada.
Rupert JonesCentre for Clinical Trials and Health Research, Plymouth University, Plymouth, UK.
Daryl FreemanNorfolk Community Health and Care NHS Trust, Norwich, UK.
Anne BurdenResearch in Real-Life, Cambridge, UK.
Shuna GouldResearch in Real-Life, Cambridge, UK.
Julie von ZiegenweidtResearch in Real-Life, Cambridge, UK.
Muzammil AliResearch in Real-Life, Cambridge, UK.
Christine KingResearch in Real-Life, Cambridge, UK.
Mike ThomasPrimary Care Research, University of Southhampton, Southhampton, UK.
Norfolk Community Health and Care NHS Trust · GBUniversity of Aberdeen · GBUniversity of Plymouth · GBUniversity of Roehampton · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRandomized controlled trials indicate that addition of a long-acting muscarinic antagonist (LAMA) such as tiotropium may improve asthma control and reduce exacerbation risk in patients with poorly controlled asthma, but broader clinical studies are needed to investigate the effectiveness of LAMA in real-life asthma care.

methodsMedical records of adults with asthma (aged ≥18 years) prescribed tiotropium were obtained from the UK Optimum Patient Care Research Database for the period 2001-2013. Patients diagnosed with chronic obstructive pulmonary disease were excluded, but no other clinical exclusions were applied. Two primary outcomes were compared in the year before (baseline) and the year after (outcome) addition of tiotropium: exacerbations (asthma-related hospital emergency department attendance or inpatient admission, or acute oral corticosteroid course) and acute respiratory events (exacerbation or antibiotic prescription with lower respiratory consultation). Secondary outcomes included lung function test results and short-acting β2 agonist usage. The Wilcoxon signed-rank test was used for variables measured on the interval scale, the marginal homogeneity test for categorized variables, and the paired t-test for lung function indices.

resultsOf the 2,042 study patients, 83% were prescribed an inhaled corticosteroid and 68% a long-acting β2 agonist during the baseline year; 67% were prescribed both. Comparing baseline and outcome years, the percentage of patients having at least one exacerbation decreased from 37% to 27% (P<0.001) and the percentage having at least one acute respiratory event decreased from 58% to 47% (P<0.001). There were no significant changes in lung function, and usage of short-acting β2 agonists (in salbutamol/albuterol equivalents) increased from a median (interquartile range) of 274 (110, 548) to 329 (110, 603) μg/day (P=0.01).

conclusionIn this real-life asthma population, addition of LAMA therapy was associated with significant decreases in the incidence of exacerbations and antibiotic prescriptions for lower respiratory tract infections in the following year.

Indexed as

anticholinergicasthma controlbronchodilatorexacerbationoral corticosteroids

Identifiers

PMID25609985
PMCPMC4298307
OpenAlexW2075465695

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.