Evidence map›Paper›PMID 23820514›Full record

ArticlePrimary care respiratory journal : journal of the General Practice Airways Group2013

Socioeconomic deprivation increases the effect of winter on admissions to hospital with COPD: retrospective analysis of 10 years of national hospitalisation data.

David A McAllister, Joanne R Morling, Colin M Fischbacher, William MacNee, Sarah H Wild

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Article in Primary care respiratory journal : journal of the General Practice Airways Group, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–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

19 citing papers in PubMed.

  1. Trial
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  5. Observational
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  9. Article
  10. Review
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  13. Defining and targeting health disparities in chronic obstructive pulmonary disease.International journal of chronic obstructive pulmonary disease · 2016
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. The causes and consequences of seasonal variation in COPD exacerbations.International journal of chronic obstructive pulmonary disease · 2014
    Review
  19. Deprivation, winter season, and COPD exacerbations.Primary care respiratory journal : journal of the General Practice Airways Group · 2013
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

David A McAllisterCentre for Population Health Sciences, The University of Edinburgh, Medical School, Edinburgh, UK.
Joanne R Morling
Colin M Fischbacher
William MacNee
Sarah H Wild

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAdmission to hospital with chronic obstructive pulmonary disease (COPD) is associated with deprivation and season. However, it is not known whether deprivation and seasonality act synergistically to influence the risk of hospital admission with COPD.

aimsTo investigate whether the relationship between season/temperature and admission to hospital with COPD differs with deprivation.

methodsAll COPD admissions (ICD10 codes J40-J44 and J47) were obtained for the decade 2001-2010 for all Scottish residents by month of admission and 2009 Scottish Index of Multiple Deprivation (SIMD) quintile. Confidence intervals for rates and absolute differences in rates were calculated and the proportion of risk during winter attributable to main effects and interactions were estimated. Monthly rates of admission by average daily minimum temperatures were plotted for each quintile of SIMD.

resultsAbsolute differences in admission rates between winter and summer increased with greater deprivation. In the most deprived quintile, in winter 19.4% (95% CI 17.3% to 21.4%) of admissions were attributable to season/deprivation interaction, 61.2% (95% CI 59.5% to 63.0%) to deprivation alone, and 5.2% (95% CI 4.3% to 6.0%) to winter alone. Lower average daily minimum temperatures over a month were associated with higher admission rates, with stronger associations evident in the more deprived quintiles.

conclusionsWinter and socioeconomic deprivation-related factors appear to act synergistically, increasing the rate of COPD admissions to hospital more among deprived people than among affluent people in winter than in the summer months. Similar associations were observed for admission rates and temperatures. Interventions effective at reducing winter admissions for COPD may have potential for greater benefit if delivered to more deprived groups.

Indexed as

Pulmonary Disease, Chronic ObstructiveSocial ClassCold TemperatureDisease ProgressionEducational StatusEmploymentHospitalizationHousingHumansIncomeRegression AnalysisResidence CharacteristicsRetrospective StudiesRisk FactorsScotlandSeasons

Identifiers

PMID23820514
PMCPMC6442821

What OpenQuestion holds

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Registered trials

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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.