Evidence map›Paper›PMID 20594429›Full record

ArticleThe British journal of general practice : the journal of the Royal College of General Practitioners2010

Trends in the epidemiology of chronic obstructive pulmonary disease in England: a national study of 51 804 patients.

Colin R Simpson, Julia Hippisley-Cox, Aziz Sheikh

Abstract read
In one paragraph

Article in The British journal of general practice : the journal of the Royal College of General Practitioners, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 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

32 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  13. Multimorbidity and emergency department visits by a homeless population: a database study in specialist general practice.The British journal of general practice : the journal of the Royal College of General Practitioners · 2019
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  18. Call to action: improving primary care for women with COPD.NPJ primary care respiratory medicine · 2017
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Colin R SimpsonAllergy and Respiratory Research Group, Centre for Population Health Sciences, University of Edinburgh, Medical School (Doorway 3), Teviot Place, Edinburgh. c.simpson@ed.ac.uk
Julia Hippisley-Cox
Aziz Sheikh

Funding

Chief Scientist Office PDF/08/02
6 · The paper itself

Abstract

backgroundPatients with chronic obstructive pulmonary disease (COPD) constitute a substantial burden to healthcare services. Analysis of national healthcare datasets offers the possibility to advance understanding about the changing epidemiology of COPD.

aimTo investigate the epidemiology of physician-diagnosed COPD in general practice. DESIGN OF STUDY: Cross-sectional study. SETTINGS: A total of 422 general practices in England contributing to the QRESEARCH database.

methodData were extracted on 2.8 million patients, including age, sex, socioeconomic status, and geographical area. Trends over time for recorded physician diagnosis of COPD were analysed (2001-2005).

resultsThere was little change over time in the incidence rate of COPD (2005: 2.0 per 1000 patient-years, 95% confidence interval [CI] = 2.0 to 2.1), but a significant increase in lifetime prevalence rate (2001: 13.5 per 1000 patients [95% CI = 13.4 to 13.7]; 2005: 16.8 [95% CI = 16.7 to 17.0]; P<0.001). In 2005, 51 804 individuals or one in 59 people in England were recorded with physician-diagnosed COPD. The most deprived people (31.1 per 1000 patients; 95% CI = 30.6 to 31.7) and those living in the north east of England (29.2 per 1000 patients; 95% CI = 28.4 to 30.1) had the highest prevalence. The observed reduction in the rate of smoking by patients with COPD (overall decrease: 2.5%; P<0.001) varied according to socioeconomic group (most affluent: 6.5% decrease, most deprived: 1.3% decrease).

conclusionGiven the peak in the incidence rate of COPD, we may be approaching the summit of COPD incidence and prevalence in England. However, the number of people affected remains high and poses a major challenge for health services, particularly those in the north east of the country and in the most deprived communities in England. The very limited decrease in smoking rates among the more deprived groups of patients with COPD is also a cause for concern.

Indexed as

Cross-Sectional StudiesEnglandFemaleHumansIncidenceMalePatient Acceptance of Health CarePrevalencePulmonary Disease, Chronic ObstructiveResidence CharacteristicsSmokingSocioeconomic Factors

Identifiers

PMID20594429
PMCPMC2894402

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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.