Evidence map›Paper›PMID 8485676›Full record

ArticleCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne1993

Variations in surgical rates in Quebec: does access to teaching hospitals make a difference?

R Blais

Abstract read
In one paragraph

Article in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Current practices of laparoscopic inguinal hernia repair: a population-based analysis.Hernia : the journal of hernias and abdominal wall surgery · 2015
    Article
  5. Review
  6. Article
  7. Defining basic services and de-insuring the rest: the wrong diagnosis and the wrong prescription.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1995
    Article
  8. Variations in hysterectomy rates in Ontario: does the indication matter?CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 1994
    Article
  9. Article
  10. 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
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

1 author.

R BlaisGroupe de recherche interdisciplinaire en santé, Université de Montréal, Que.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo document the geographic variations in the rates of 10 common surgical procedures in Quebec and to examine the relation between surgical rates and level of access to teaching hospitals.

designPopulation-based rates standardized for age and sex were calculated from 1985-88 data from MED-ECHO (the provincial hospital discharge database) for each of the 32 community health districts (départements de santé communautaire [DSCs]) in Quebec. Variation across DSCs was analysed with the use of the ratio of the highest to the lowest rate, the coefficient of variation and the systematic component of variation. On the basis of an urbanization index designed by Statistics Canada, DSCs were classified as having a low, medium, high or very high level of access to teaching hospitals. PATIENTS: All Quebec residents except those whose DSC of residence could not be traced (accounting for no more than 1.7% of patients for any study procedure) and aboriginal people from northern Quebec. SURGICAL PROCEDURES STUDIED: Appendectomy, cesarean section, cholecystectomy, coronary artery bypass grafting (CABG), hysterectomy, inguinal hernia repair, prostatectomy, tonsillectomy with or without adenoidectomy, total hip replacement and varicose vein stripping.

resultsThere was considerable systematic variation in the surgical rates for all 10 procedures. Cesarean section, the rates of which varied the least, still exhibited almost a twofold variation between the highest and lowest rates. The rates of tonsillectomy varied the most, by a factor of more than five. With a few exceptions there was relatively little relation between the rates of the procedures within the DSCs. The rates of appendectomy, cholecystectomy, hysterectomy and tonsillectomy tended to be lower in the DSCs containing teaching hospitals, whereas the reverse was true for CABG. For the other procedures the relation between the rates and the level of access to teaching hospitals was nonsignificant.

conclusionsThe overall consistency of the observed variations with those of previous studies invites a closer look at the practice patterns and the scientific basis of the clinical decisions associated with procedures showing high variations in rates. The lack of a systematic relation between the surgical rates and the level of access to teaching hospitals challenges the belief that remote regions are underserved with respect to the procedures studied.

Indexed as

FemaleHealth Services AccessibilityHealth Services ResearchHospitals, TeachingHumansMalePractice Patterns, Physicians'QuebecSurgical Procedures, Operative

Identifiers

PMID8485676
PMCPMC1485540

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.