Evidence map›Paper›PMID 36936574›Full record

ArticleBMJ medicine2022

The case-crossover design for studying sudden events.

Dan Lewer, Irene Petersen, Malcolm Maclure

Abstract read
In one paragraph

Article in BMJ medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Trigger Factors in Recurrent Corneal Erosion Syndrome.Journal of clinical medicine · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Core Concepts: Self-Controlled Designs in Pharmacoepidemiology.Pharmacoepidemiology and drug safety · 2025
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

3 authors.

Dan LewerEpidemiology and Public Health, UCL, London, UK.ORCID 0000-0003-3698-7196
Irene PetersenDepartment of Primary Care and Population Health, UCL, London, UK.
Malcolm MaclureDepartment of Anaesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, BC, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Indexed as

Epidemiology

Identifiers

PMID36936574
PMCPMC9978680

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.