Evidence map›Paper›PMID 28331305›Full record

Observational studyInternational journal of chronic obstructive pulmonary disease2017

Colds as predictors of the onset and severity of COPD exacerbations.

Neil W Johnston, Marita Olsson, Staffan Edsbäcker, Maria Gerhardsson de Verdier, Per Gustafson, Christopher McCrae, Peter V Coyle, R Andrew McIvor

Abstract readObservational Study
In one paragraph

Observational study in International journal of chronic obstructive pulmonary disease, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

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

  1. Vaccines for the common cold.The Cochrane database of systematic reviews · 2022
    Pooled it
  2. Article
  3. Article
  4. Review
  5. The Role of Atopy in COPD and Asthma.Frontiers in medicine · 2021
    Review
  6. Exacerbations of Lung Disease in Alpha-1 Antitrypsin Deficiency.Chronic obstructive pulmonary diseases (Miami, Fla.) · 2021
    Article
  7. IFN Therapy in Airway Disease: Is Prophylaxis a New Approach in Exacerbation Prevention?American journal of respiratory and critical care medicine · 2020
    Article
  8. Respiratory viral infection: a potential "missing link" in the pathogenesis of COPD.European respiratory review : an official journal of the European Respiratory Society · 2019
    Review
  9. Blocking rhinoviral adhesion molecule (ICAM-1): potential to prevent COPD exacerbations.International journal of chronic obstructive pulmonary disease · 2017
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Neil W JohnstonDepartment of Medicine, Firestone Institute for Respiratory Health, McMaster University, Hamilton, ON, Canada.
Marita OlssonEarly Clinical Development Biometrics.
Staffan EdsbäckerRespiratory, Inflammation & Autoimmunity Unit, Innovative Medicines & Early Development.
Maria Gerhardsson de VerdierMedical Evidence and Observational Research Centre.
Per GustafsonRespiratory, Inflammation & Autoimmunity Translational Medicine Unit, Early Clinical Development, Innovative Medicines & Early Development, AstraZeneca Research and Development, Gothenburg, Molndal, Sweden.
Christopher McCraeRespiratory, Inflammation & Autoimmunity Unit, Innovative Medicines & Early Development.
Peter V CoyleRegional Virology Laboratory, Belfast HSC Trust, Belfast, UK.
R Andrew McIvorDepartment of Medicine, Firestone Institute for Respiratory Health, McMaster University, Hamilton, ON, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleCommon colds are associated with acute respiratory symptom exacerbations in COPD patients.

objectiveTo determine exacerbation risk and severity in COPD patients with/without coincident self-reported colds.

methodsGlobal initiative for chronic Obstructive Lung Disease stage I-IV COPD patients electronically transmitted respiratory symptom diaries to research staff daily between December 2006 and April 2009. Respiratory symptom worsening prompted contact by a study nurse and patient assessment to determine if a cold was present or an exacerbation underway. A composite daily symptom score was derived for each subject from diarized symptom data. The exacerbation/cold/virus relation was examined using a Poisson regression model, the relation of colds to respiratory symptom severity using generalized estimating equation models.

resultsDaily diary transmission compliance of >97% enabled detection of all possible exacerbations. Among 262 exacerbations meeting Anthonisen criteria, 218 (83%) had cold-like symptoms present at their inception, but respiratory viruses were detected in only 106 (40%). Within-subject exacerbation risk was 30 times (95% confidence interval [CI]: 20, 47;

conclusionThis study emphasizes the importance of colds in COPD exacerbation risk and severity, even in the absence of virus detection. COPD patients should act promptly when cold symptoms appear to facilitate early intervention for exacerbation prevention or management.

Indexed as

AgedAged, 80 and overCommon ColdDisease ProgressionElectronic Health RecordsFemaleHumansLungMaleMiddle AgedPrognosisProspective StudiesPulmonary Disease, Chronic ObstructiveRisk FactorsSeverity of Illness Indexcommon coldCOPD epidemiologyCOPD exacerbationsrespiratory infectionrespiratory viruses

Identifiers

PMID28331305
PMCPMC5354536

What OpenQuestion holds

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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.