Evidence map›Paper›PMID 36936579›Full record

ArticleBMJ medicine2022

Conducting umbrella reviews.

Lazaros Belbasis, Vanesa Bellou, John P A Ioannidis

Abstract read
PubMed Full text at PMC Publisher
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 169 papers, 82 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
169citing papers in PubMed, 82 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

169 citing papers in PubMed, 82 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Dental caries and periodontal status in children and adolescents with type 1 diabetes mellitus: an umbrella review.European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry · 2026
    Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Pooled it
  9. Pooled it
  10. Key factors for promoting protective behaviours in future pandemics: an umbrella review.Archives of public health = Archives belges de sante publique · 2026
    Pooled it
  11. Pooled it
  12. Association between passive smoking and oral health among children: an umbrella review.European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry · 2026
    Pooled it
  13. Pooled it
  14. Pooled it
  15. Pooled it
  16. Operationalizing and Measuring Informed Choice in Health Care: An Umbrella Review.Medical decision making : an international journal of the Society for Medical Decision Making · 2026
    Pooled it
  17. Pooled it
  18. Pooled it
  19. Pooled it
  20. Pooled it

109 more citing papers are in PubMed but not listed here.

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.

Lazaros BelbasisMeta-Research Innovation Center Berlin, QUEST Center, Berlin Institute of Health, Charité Universitätsmedizin Berlin, Berlin, Germany.ORCID 0000-0002-2334-6974
Vanesa BellouDepartment of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece.
John P A IoannidisMeta-Research Innovation Center Berlin, QUEST Center, Berlin Institute of Health, Charité Universitätsmedizin Berlin, Berlin, Germany.ORCID 0000-0003-3118-6859

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this article, Lazaros Belbasis and colleagues explain the rationale for umbrella reviews and the key steps involved in conducting an umbrella review, using a working example.

Indexed as

research designstatistics

Identifiers

PMID36936579
PMCPMC9951359

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.