ArticleThorax2025
Effect of time of day and seasonal variation on bronchodilator responsiveness: the SPIRO-TIMETRY study.
Article in Thorax, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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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.
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.
Who cites it
2 citing papers in PubMed.
- What do patients think about home-based testing for better asthma diagnosis? Insights from a qualitative study.BMJ open · 2026Observational
- Real-world effectiveness of biologic therapies in severe asthma patients ineligible for phase 3 randomised controlled trials of biologics: an analysis from the UK Severe Asthma Registry.ERJ open research · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We investigated the association between time of day and season of testing on the level of bronchodilator responsiveness in a hospital-based population. We found that per 1-hour increment in the working day, the odds of a positive bronchodilator response decreased by 8%. A similar effect was seen when time of day was dichotomised into morning and afternoon time periods. When stratifying by referral reason, the impact of time of day was only seen in those referred for asthma/query asthma. We also found that bronchodilator responsiveness was more common in winter months compared with the rest of the year.
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Registered trials
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