Evidence map›Paper›PMID 25180313›Full record

SynthesisSchizophrenia bulletin2015

The Epidemiology and Associated Phenomenology of Formal Thought Disorder: A Systematic Review.

Eric Roche, Lisa Creed, Donagh MacMahon, Daria Brennan, Mary Clarke

Abstract readSystematic Review
In one paragraph

Synthesis in Schizophrenia bulletin, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 2 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

73 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. The link between formal thought disorder and social functioning in schizophrenia: A meta-analysis.European psychiatry : the journal of the Association of European Psychiatrists · 2020
    Pooled it
  3. Review
  4. Article
  5. Article
  6. Article
  7. Increasing participation of people with thought disorder in clinical research.European psychiatry : the journal of the Association of European Psychiatrists · 2026
    Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. Linking spontaneous speech, cognition, and psychopathology across affective and psychotic disorders: A network approach.European psychiatry : the journal of the Association of European Psychiatrists · 2026
    Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article

13 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

5 authors.

Eric RocheDETECT Early Intervention in Psychosis Service, Dublin, Ireland; eric.roche@sjog.ie.
Lisa CreedCluain Mhuire Community Mental Health Service, Dublin, Ireland;
Donagh MacMahonUniversity College Dublin, Dublin, Ireland;
Daria BrennanSt John of God Hospital, Dublin, Ireland.
Mary ClarkeDETECT Early Intervention in Psychosis Service, Dublin, Ireland;

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAuthors of the Diagnostic and Statistical Manual, Fifth Edition (DSM-V) have recommended to "integrate dimensions into clinical practice." The epidemiology and associated phenomenology of formal thought disorder (FTD) have been described but not reviewed. We aimed to carry out a systematic review of FTD to this end.

methodsA systematic review of FTD literature, from 1978 to 2013, using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

resultsA total of 881 abstracts were reviewed and 120 articles met inclusion criteria; articles describing FTD factor structure (n = 15), prevalence and longitudinal course (n = 41), role in diagnosis (n = 22), associated clinical variables (n = 56), and influence on outcome (n = 35) were included. Prevalence estimates for FTD in psychosis range from 5% to 91%. Dividing FTD into domains, by factor analysis, can accurately identify 91% of psychotic diagnoses. FTD is associated with increased clinical severity. Poorer outcomes are predicted by negative thought disorder, more so than the typical construct of "disorganized speech."

conclusionFTD is a common symptom of psychosis and may be considered a marker of illness severity. Detailed dimensional assessment of FTD can clarify diagnosis and may help predict prognosis.

Indexed as

Cognition DisordersHumansPsychotic DisordersThinkingcommunicationepidemiologyformal thought disorderlanguagephenomenologyprognosispsychosisschizophreniathought disorder

Identifiers

PMID25180313
PMCPMC4466171

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.