Evidence map›Paper›PMID 31169131›Full record

SynthesisJournal of postgraduate medicine

Patients with psoriasis have a higher risk of schizophrenia: A systematic review and meta-analysis of observational studies.

P Ungprasert, K Wijarnpreecha, W Cheungpasitporn

Open access · diamondAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of postgraduate medicine. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
0.8field-weighted citation impact, top 29% 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Dopamine, Immunity, and Disease.Pharmacological reviews · 2023
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. HLA-Cw1 and Psoriasis.American journal of clinical dermatology · 2021
    Review
  18. 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 at 3 institutions in 2 countries.

P UngprasertClinical Epidemiology Unit, Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
K WijarnpreechaDepartment of Internal Medicine, Bassett Medical Center, Cooperstown, NY, USA.
W CheungpasitpornDivision of Nephrology, Department of Medicine, University of Mississippi Medical Center, Jackson, MS, USA.
Bassett Medical Center · USSiriraj Hospital · THUniversity of Mississippi Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and Objectives: Patients with psoriasis are known to be at a higher risk of several comorbidities, but little is known about their risk of developing schizophrenia. Methods: A systematic review and meta-analysis of cohort and case-control studies that reported relative risk, hazard ratio, odds ratio (OR), or standardized incidence ratio comparing risk of schizophrenia in patients with psoriasis versus subjects without psoriasis was conducted. Pooled OR and 95% confidence interval were calculated using random-effect, generic inverse-variance methods of DerSimonian and Laird. Results: A total of five studies (one retrospective cohort study and four case-control studies) with more than 6 million participants met the eligibility criteria and were included in this meta-analysis. The pooled OR of schizophrenia in patients with psoriasis versus subjects without psoriasis was 1.41 (95% confidence interval, 1.19-1.66). The statistical heterogeneity was low with an I2 of 33%. Conclusion: This systematic review and meta-analysis demonstrated a significantly increased risk of schizophrenia among patients with psoriasis.

Indexed as

AdultCase-Control StudiesFemaleHumansIncidenceMaleMiddle AgedObservational Studies as TopicOdds RatioProportional Hazards ModelsPsoriasisRetrospective StudiesRisk FactorsSchizophreniaMeta-analysispsoriasisrisk factorschizophrenia

Identifiers

PMID31169131
PMCPMC6659437
OpenAlexW2963399212

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.