Evidence map›Paper›PMID 30661132›Full record

ArticleEuropean child & adolescent psychiatry2019

Tic disorders revisited: introduction of the term "tic spectrum disorders".

Kirsten R Müller-Vahl, Tanvi Sambrani, Ewgeni Jakubovski

Open access · hybridAbstract read
In one paragraph

Article in European child & adolescent psychiatry, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 3 pooled it
11.7field-weighted citation impact, top 1% 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

43 citing papers in PubMed, 3 syntheses or guidelines pooled it, 84 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Contemporary Perspectives on Neurobiology and Treatment of Tic Disorders: A Narrative Review.Journal of the Korean Academy of Child and Adolescent Psychiatry · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. The volatile oil ofFrontiers in pharmacology · 2025
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 2 countries.

Kirsten R Müller-VahlClinic of Psychiatry, Social Psychiatry, and Psychotherapy, Hannover Medical School, Hannover, Germany.ORCID http://orcid.org/0000-0002-7181-7419
Tanvi SambraniClinic of Psychiatry, Social Psychiatry, and Psychotherapy, Hannover Medical School, Hannover, Germany.
Ewgeni JakubovskiClinic of Psychiatry, Social Psychiatry, and Psychotherapy, Hannover Medical School, Hannover, Germany. Jakubovski.ewgeni@mh-hannover.de.ORCID http://orcid.org/0000-0001-8546-5330
Medizinische Hochschule Hannover · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although the DSM-5 chronic motor tic disorder (CMTD) and Tourette syndrome (TS) are distinct diagnostic categories, there is no genetic or phenotypic evidence that supports this diagnostic categorization. The aim of this study was to compare patients with both diagnoses along a number of clinical characteristics to provide further diagnostic clarity. Our sample consisted of 1018 patients (including adult and child patients) suffering from chronic tic disorders. Tic severity was assessed via Shapiro Tourette-Syndrome Severity Scale (STSS). Lifetime prevalence of other comorbid conditions was assessed in a semi-structured clinical interview. The data were gained through retrospective chart analysis. The two groups did not differ significantly in any of the clinical or demographic variables. Patients only differed in tic severity, with CMTD patients (n = 40) having lower mean tic severity (STSS = 2.0 vs. 2.8; p < 0.001), prevalence of complex motor tics (27.5% vs. 55.9%; p < 0.01), copropraxia (0% vs. 16.2%; p < 0.01) and echopraxia (10.0% vs. 23.8%; p < 0.05), and a markedly lower comorbidity score (1.9 vs. 2.7; p < 0.001) as compared to TS patients (n = 978). Our results suggest that both disorders exist along a symptom severity continuum of which TS constitutes a more severe and CMTD a less severe form. We therefore suggest the introduction of the term "tic spectrum disorders", instead of using different diagnostic categories.

Indexed as

Diagnostic and Statistical Manual of Mental DisordersChildFemaleHumansMaleObsessive-Compulsive DisorderRetrospective StudiesSeverity of Illness IndexTic DisordersTourette SyndromeDiagnosisNosologyTourette syndrome

Identifiers

PMID30661132
PMCPMC6675752
OpenAlexW2910020987

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.