Evidence map›Paper›PMID 33438083›Full record

ArticleJournal of patient-reported outcomes2021

The impact of moderate and severe asthma exacerbations on quality of life: a post hoc analysis of randomised controlled trial data.

Andrew Briggs, Shuaib Nasser, Eva Hammerby, Sarah Buchs, J Christian Virchow

Abstract read
In one paragraph

Article in Journal of patient-reported outcomes, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Vitamin D for the management of asthma.The Cochrane database of systematic reviews · 2023
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Asthma Exacerbations: The Genes Behind the Scenes.Journal of investigational allergology & clinical immunology · 2023
    Review
  10. Article
  11. 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

5 authors.

Andrew BriggsDepartment of Health Services Research & Policy, London School of Hygiene & Tropical Medicine, London, England.
Shuaib NasserDepartment of Allergy, Cambridge University Hospitals NHS Foundation Trust, Cambridge, England.
Eva HammerbyALK-Abello A/S, Bøge Allé 1, DK-2970, Hørsholm, Denmark. eva.hammerby@alk.net.ORCID http://orcid.org/0000-0002-3974-0124
Sarah BuchsALK-Abello A/S, Bøge Allé 1, DK-2970, Hørsholm, Denmark.
J Christian VirchowDepartment of Pulmonology/Intensive Care Medicine, University of Rostock, Rostock, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis paper reports the duration of moderate and severe exacerbations in patients with house dust mite induced allergic asthma and the impact on patients' quality of life.

methodsPost-hoc analyses were conducted using data collected during a phase III multi-national trial (MT-04) that investigated time to moderate or severe asthma exacerbation among 485 patients during withdrawal from inhaled corticosteroids. Patient diaries were analysed to ascertain duration of exacerbations. The impact on patients' quality of life was measured by calculating utilities for five health states using the EuroQol-5 Dimension (EQ-5D-3L) and Asthma Quality of Life Questionnaire (AQL-5D). A regression analysis predicted the disutility of moving from 'well controlled asthma' to the other four health states: 'partially controlled asthma', 'uncontrolled asthma', 'moderate exacerbation' and 'severe exacerbation'.

resultsTwo hundred four patients experienced exacerbations. Moderate and severe exacerbations involved statistically significant reductions in lung function compared to the constant peak expiratory flow observed for patients without exacerbations. Lung function decline occurred for 28 days, decreasing approximately 14 days before an exacerbation followed by a return to baseline over 14 days. Asthma symptoms, the use of short-acting β2-agonists, and frequency of nocturnal awakening all increased, starting 10-14 days before an exacerbation, and returned to baseline within 10-28 days following exacerbations. Compared to 'well controlled asthma', the disutility of having a 'moderate exacerbation' ranged from - 0.0834 to - 0.0921 (EQ-5D-3L) and from - 0.114 to - 0.121 (AQL-5D); and of having a 'severe exacerbation' from - 0.115 to - 0.163 (EQ-5D-3L) and from - 0.153 to - 0.217 (AQL-5D), depending on the length of the observation period.

conclusionsThe impact of moderate and severe exacerbations in house dust mite induced allergic asthma extends 14 days before and 28 days after the peak exacerbation event. The impact of exacerbations on patients' health-related quality of life (HRQoL) continues long after their occurrence.

Indexed as

Allergic asthmaAsthmaAsthma exacerbationExacerbationHouse dust mite allergic asthmaQuality of lifeUtility

Identifiers

PMID33438083
PMCPMC7803866

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.