Evidence map›Paper›PMID 8697156›Full record

ArticleHeart (British Cardiac Society)1996

Cigarette smoking in British men and selection for coronary artery bypass surgery.

R W Morris, A K McCallum, M Walker, P H Whincup, S Ebrahim, A G Shaper

Open access · bronzeAbstract read
In one paragraph

Article in Heart (British Cardiac Society), 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.8field-weighted citation impact, top 26% of its field
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

5 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Article
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  4. Article
  5. Coronary artery bypass surgery in smokers.Heart (British Cardiac Society) · 1996
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

R W MorrisDepartment of Primary Care and Population Sciences, Royal Free Hospital School of Medicine, London.
A K McCallum
M Walker
P H Whincup
S Ebrahim
A G Shaper
University College London · GBThe Royal Free Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the relation between smoking status, clinical need, and likelihood of coronary artery bypass grafting in middle aged men.

designA prospective study of cardiovascular disease in British men aged 40 to 59 years, screened in 1978-80 and followed until December 1991. SUBJECTS AND

setting7735 men drawn from one general practice in each of 24 British towns.

main outcome measureCoronary artery bypass graft surgery.

resultsOf the 3185 current smokers, 38 (1.03/1000/year) underwent coronary artery bypass surgery compared with 47 of 2715 (1.45/1000/year) ex-smokers, and 19 of 1817 (0.85/1000/year) never-smokers. Ex-smokers had a lower incidence of major ischaemic heart disease during follow up than current smokers. After adjustment for incidence of ischaemic heart disease during follow up, the hazard ratio of coronary artery bypass surgery for ex-smokers compared with smokers was 1.52 (95% confidence interval 0.99 to 2.34). Ex-smokers were more likely at screening to recall a doctor diagnosis of ischaemic heart disease than smokers (7.1% v 5.3%), but among those who recalled a doctor diagnosis, smokers were less likely to undergo coronary artery bypass surgery than ex-smokers (9.4% v 3.5%, P = 0.026). By 1992, men defined as smokers at screening were no less likely than ex-smokers to have been referred to a cardiologist (18.5% v 18.8%), nor to report having undergone coronary angiography less frequently than ex-smokers (12.7% v 11.4%).

conclusionEven allowing for the strong relation between coronary artery bypass surgery and clinical need, continuing smokers were less likely to undergo coronary artery bypass surgery than ex-smokers. A complex interplay exists between the men's experience of heart disease, the decision to stop smoking, and the willingness of doctors to consider coronary artery bypass surgery.

Indexed as

Coronary Artery BypassPatient SelectionAdultAge FactorsCoronary DiseaseEnglandHumansMaleMiddle AgedProspective StudiesScotlandSmokingSmoking PreventionSocial ClassSurvival Rate

Identifiers

PMID8697156
PMCPMC484376
OpenAlexW2054594557

What OpenQuestion holds

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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.