Evidence map›Paper›PMID 16639475›Full record

ArticleThe Canadian journal of cardiology2006

Trends in five-year survival of patients discharged after acute myocardial infarction.

Iqbal R Bata, Ronald D Gregor, Hermann K Wolf, Brenda Brownell

Abstract readComparative Study
In one paragraph

Article in The Canadian journal of cardiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

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  14. Feasibility of detecting myocardial infarction in the sheep fetus using late gadolinium enhancement CMR imaging.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2017
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Iqbal R BataDepartment of Medicine, Division of Cardiology, Dalhousie University, Halifax, Nova Scotia, Canada.
Ronald D Gregor
Hermann K Wolf
Brenda Brownell

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt has previously been shown that the increased use of therapeutic intervention may not reduce patient fatality if there is a simultaneous increase in case severity. The present study was designed to extend the relationship between case severity and therapeutic interventions to long-term survival in the same study population.

objectiveTo compare five-year survival of patients discharged after acute myocardial infarction from 1984 to 1988 and from 1989 to 1993, and to evaluate possible reasons for survival differences.

methodsThe present study was population-based. Survival time was determined by record linkage into the Canadian Mortality Database. Association of five-year survival with patient characteristics, in-hospital treatment and discharge medications was assessed by logistical regression analysis. Case severity was calculated as the probability of death within five years, given the patient profile and excluding any interventions.

resultsBetween the two study periods, most patient characteristics and treatment intensity changed, but case severity for the study population remained constant. Five-year survival improved from 74.8% to 79.2% (P(chi2)=0.001). The improvement was adequately described by the combination of changes in patient profile and treatment without residual period effect (P(goodness-of-fit)=0.752). The treatments significantly associated with five-year survival were coronary artery bypass graft surgery (OR 2.74; 95% CI 1.86 to 4.05), percutaneous coronary intervention (OR 2.63; 95% CI 1.67 to 4.14) and thrombolysis (OR 1.98; 95% CI 1.50 to 2.62) during admission, as well as acetylsalicylic acid (OR 1.39; 95% CI 1.15 to 1.68) or beta-blocker (OR 1.60; 95% CI 1.34 to 1.92) prescription at discharge.

conclusionsChanges in patient profile did not affect long-term prognosis; instead, treatment modalities accounted for the observed improvement in five-year survival.

Indexed as

AdultAgedAge DistributionCause of DeathComorbidityCoronary Artery BypassDiabetes MellitusElectrocardiographyFemaleHospital MortalityHumansHypertensionLength of StayLogistic ModelsMaleMiddle Aged

Identifiers

PMID16639475
PMCPMC2560535

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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.