Evidence map›Paper›PMID 15887796›Full record

ArticleCanadian journal of surgery. Journal canadien de chirurgie2005

Users' guide to the surgical literature. Case-control studies in surgical journals.

Alexandra Mihailovic, Chaim M Bell, David R Urbach

Open access · greenAbstract read
In one paragraph

Article in Canadian journal of surgery. Journal canadien de chirurgie, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 15% 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Publishing trends in World Journal of Pediatric Surgery.World journal of pediatric surgery · 2022
    Article
  4. Misclassification of Case-Control Studies in the Orthopedic Literature Is Common: A Bibliometric Analysis.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2020
    Article
  5. Article
  6. Review
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

3 authors at 1 institution in 1 country.

Alexandra MihailovicDepartment of Surgery, Toronto General Hospital Research Institute, Toronto, Ont.
Chaim M Bell
David R Urbach
Toronto General Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionSome articles in surgical journals identify themselves as case-control studies, but their methods differ substantially from conventional epidemiologic case-control study (ECC) designs. Most of these studies appear instead to be retrospective cohort studies or comparisons of case series.

methodsWe identified all self-identified "case-control" studies published between 1995 and 2000 in 6 surgical journals, to determine the proportion that were true ECCs and to identify study characteristics associated with being true ECCs.

resultsOnly 19 out of 55 articles (35%) described true ECCs. More likely to be ECCs were those articles that reported "odds ratios" (ORs) (the OR for being an ECC if a study reported "ORs" compared with those reporting no "ORs" 15.3; 95% confidence interval [CI] 2.8-82.6) and whose methods included logistic regression analysis (OR 3.6, CI 1.0-12.9). Studies that focused on the evaluation of a surgical procedure were less likely to be ECCs (OR 0.2, CI 0.1-0.7) than other types of studies, such as those focusing on risk factors for disease.

conclusionsThe term "case-control study" is frequently misused in the surgical literature.

Indexed as

Case-Control StudiesEpidemiologic Research DesignGeneral SurgeryHumansLogistic ModelsOdds RatioPeriodicals as TopicTerminology as Topic

Identifiers

PMID15887796
PMCPMC3211621
OpenAlexW2286810959

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.