Evidence map›Paper›PMID 33252130›Full record

SynthesisSchizophrenia bulletin2021

Comorbid Major Depressive Disorder in Schizophrenia: A Systematic Review and Meta-Analysis.

Damien Etchecopar-Etchart, Theo Korchia, Anderson Loundou, Pierre-Michel Llorca, Pascal Auquier, Christophe Lançon, Laurent Boyer, Guillaume Fond

Open access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Schizophrenia bulletin, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 3 pooled it
7.4field-weighted citation impact, top 2% 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

52 citing papers in PubMed, 3 syntheses or guidelines pooled it, 105 citations in OpenAlex.

  1. The Australian and New Zealand journal of psychiatry · 2026
    Guideline
  2. Pooled it
  3. Pooled it
  4. Article
  5. Review
  6. Article
  7. Observational
  8. The working lives of neuronal 5-HTRSC chemical biology · 2026
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Antidepressant Augmentation of Antipsychotic Treatment in Schizophrenia: A Narrative Review.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  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

8 authors at 2 institutions in 1 country.

Damien Etchecopar-EtchartHôpitaux Universitaires de Marseille, Department de Psychiatrie Universitaire, EA 3279: Aix-Marseille Université, CEReSS-Health Service Research and Quality of Life Center, Marseille, France.
Theo KorchiaHôpitaux Universitaires de Marseille, Department de Psychiatrie Universitaire, EA 3279: Aix-Marseille Université, CEReSS-Health Service Research and Quality of Life Center, Marseille, France.
Anderson LoundouHôpitaux Universitaires de Marseille, Department de Psychiatrie Universitaire, EA 3279: Aix-Marseille Université, CEReSS-Health Service Research and Quality of Life Center, Marseille, France.
Pierre-Michel LlorcaDepartment of Psychiatry, University Hospital, Clermont Ferrand, France.
Pascal AuquierHôpitaux Universitaires de Marseille, Department de Psychiatrie Universitaire, EA 3279: Aix-Marseille Université, CEReSS-Health Service Research and Quality of Life Center, Marseille, France.
Christophe LançonHôpitaux Universitaires de Marseille, Department de Psychiatrie Universitaire, EA 3279: Aix-Marseille Université, CEReSS-Health Service Research and Quality of Life Center, Marseille, France.
Laurent BoyerHôpitaux Universitaires de Marseille, Department de Psychiatrie Universitaire, EA 3279: Aix-Marseille Université, CEReSS-Health Service Research and Quality of Life Center, Marseille, France.
Guillaume FondHôpitaux Universitaires de Marseille, Department de Psychiatrie Universitaire, EA 3279: Aix-Marseille Université, CEReSS-Health Service Research and Quality of Life Center, Marseille, France.
Aix-Marseille Université · FRUniversité Clermont Auvergne · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Comorbid major depressive disorder (MDD) in schizophrenia (SZ; SZ-MDD) has been identified as a major prognostic factor. However, the prevalence and associated factors of SZ-MDD have never been explored in a meta-analysis. All studies assessing the prevalence of SZ-MDD in stabilized outpatients with a standardized scale or with structured interviews were included. The Medline, Web of Science, PsycINFO, and Google Scholar databases were searched. Using random effects models, we calculated the pooled estimate of the prevalence of SZ-MDD. We used meta-regression and subgroup analyses to evaluate the potential moderators of the prevalence estimates, and we used the leave-one-out method for sensitivity analyses. Of the 5633 potentially eligible studies identified, 18 studies (n = 6140 SZ stabilized outpatients) were retrieved in the systematic review and included in the meta-analysis. The pooled estimate of the prevalence of SZ-MDD was 32.6% (95% CI: 27.9-37.6); there was high heterogeneity (I2 = 92.6%), and Egger's test did not reveal publication bias (P = .122). The following factors were found to be sources of heterogeneity: publication in or after 2015, the inclusion of patients from larger studies, the assessment tools, the inclusion of patients with substance use disorder or somatic chronic diseases, age, education level, the lifetime number of hospitalizations, and antidepressant use. Two-thirds of the extracted variables could not be explored due to an insufficient amount of published data. The prevalence of MDD is high among SZ individuals. Healthcare providers and public health officials should have an increased awareness of the burden of SZ-MDD.

Indexed as

ComorbidityHumansMajor Depressive DisorderSchizophreniaantidepressantdepressionmeta-analysisprevalencepsychiatryschizophreniatreatment

Identifiers

PMID33252130
PMCPMC8451068
OpenAlexW3106719756

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.