Evidence map›Paper›PMID 1544075›Full record

ArticleCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne1992

Coronary artery bypass grafting in Canada: What is its rate of use? Which rate is right?

C D Naylor, A M Ugnat, D Weinkauf, G M Anderson, A Wielgosz

Open access · greenAbstract readComparative Study
In one paragraph

Article in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
17.9field-weighted citation impact, top 1% 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

11 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Coronary artery bypass grafting in elderly patients: the price of success.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1999
    Review
  3. Direct costs of coronary artery bypass grafting in patients aged 65 years or more and those under age 65.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1999
    Article
  4. Article
  5. Coronary artery bypass graft surgery in Newfoundland and Labrador.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1998
    Article
  6. Coronary revascularisation: why do rates vary geographically in the UK?Journal of epidemiology and community health · 1995
    Article
  7. Article
  8. Regionalized delivery and variable utilization of coronary artery bypass grafting in Ontario from 1981 to 1991.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1994
    Article
  9. Sex-related differences in coronary revascularization practices: the perspective from a Canadian queue management project.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1993
    Article
  10. Variations in surgical rates in Quebec: does access to teaching hospitals make a difference?CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1993
    Article
  11. Trends in coronary artery bypass grafting in Ontario from 1981 to 1989.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1993
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

C D NaylorClinical Epidemiology Unit, Sunnybrook Health Science Centre, Toronto, Ont.
A M Ugnat
D Weinkauf
G M Anderson
A Wielgosz
Sunnybrook Health Science Centre · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We reviewed recent reports from administrative databases and clinical registries addressing the utilization of coronary artery bypass grafting (CABG) in Canada. The Canadian CABG rate per 100,000 people increased from 31.1 to 43.2 between 1981-82 and 1986-87. Between 1981 and 1986 the rate in the United States increased from 69.9 to 95.3 per 100,000, consistently about two times the Canadian rate. Provincial data have shown particular growth in utilization among elderly people. However, in the United States the 1985 CABG rate was twice as high as the aggregated age-specific rates for Ontario and Manitoba among people 65 to 74 years of age and four times higher among those 75 years or more. Limited registry data suggest that the Canadian CABG case mix is similar to the case mix in major US centres and that, utilization growth notwithstanding, the procedure is largely applied to patients who should, in theory, benefit (i.e., those with severe angina, impaired left ventricular function and left main-stem or triple-vessel disease). However, chart audits and registry evaluations using explicit criteria are needed to compare the use of CABG in Canada and the United States. In addition, Canadian data show moderate regional and municipal variations, the 1986-87 rates per 100,000 population in major census metropolitan areas varying from 19.5 to 46.9. Areas with consistently low rates raise particular concerns about impaired access to CABG. Reasons for variations should therefore be a research priority.

Indexed as

AdultAgedCanadaCoronary Artery BypassFemaleHumansMaleMiddle AgedRegistriesUnited States

Identifiers

PMID1544075
PMCPMC1488668
OpenAlexW1773718342

What OpenQuestion holds

Textmetadata
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.