Evidence map›Paper›PMID 33851280›Full record

ArticleEuropean child & adolescent psychiatry2022

Vitamin D levels in children and adolescents with chronic tic disorders: a multicentre study.

Molly Bond, Natalie Moll, Alicia Rosello, Rod Bond, Jaana Schnell, Bianka Burger, Pieter J Hoekstra, Andrea Dietrich, Anette Schrag, Eva Kocovska and 5 more

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in European child & adolescent psychiatry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 17 citations in OpenAlex.

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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

15 authors at 9 institutions in 4 countries.

Molly Bond *Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London, E1 2AT, UK. m.s.bond@smd17.qmul.ac.uk.ORCID http://orcid.org/0000-0003-4406-8990
Natalie Moll *Institute of Laboratory Medicine, University Hospital, LMU Munich, Munich, Germany.
Alicia RoselloStatistics, Modelling and Economic Department, National Infection Service, PHE, London, UK.
Rod BondUniversity of Sussex, Brighton, UK.
Jaana SchnellDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Bianka BurgerDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Pieter J HoekstraDepartment of Child and Adolescent Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Andrea DietrichDepartment of Child and Adolescent Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Anette SchragDepartment of Clinical Neuroscience, UCL Institute of Neurology, University College London, London, UK.
Eva KocovskaBlizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London, E1 2AT, UK.
Davide MartinoDepartment of Clinical Neurosciences, Cumming School of Medicine and Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada.
Norbert MuellerDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Markus SchwarzInstitute of Laboratory Medicine, University Hospital, LMU Munich, Munich, Germany.
Ute-Christiane MeierInstitute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
EMTICS Collaborative Group
LMU Klinikum · DEUniversity Medical Center Groningen · NLQueen Mary University of London · GBUniversity of Calgary · CAKing's College London · GBLondon School of Hygiene & Tropical Medicine · GBLudwig-Maximilians-Universität München · DEUniversity College London · GBUniversity of Sussex · GB

Funding

Seventh Framework Programme 278367
6 · The paper itself

Abstract

This study investigated whether vitamin D is associated with the presence or severity of chronic tic disorders and their psychiatric comorbidities. This cross-sectional study compared serum 25-hydroxyvitamin D [25(OH)D] (ng/ml) levels among three groups: children and adolescents (3-16 years) with CTD (n = 327); first-degree relatives (3-10 years) of individuals with CTD who were assessed for a period of up to 7 years for possible onset of tics and developed tics within this period (n = 31); and first-degree relatives who did not develop tics and were ≥ 10 years old at their last assessment (n = 93). The relationship between 25(OH)D and the presence and severity of tics, as well as comorbid obsessive-compulsive disorder (OCD) and attention-deficit/hyperactivity disorder (ADHD), were analysed controlling for age, sex, season, centre, latitude, family relatedness, and comorbidities. When comparing the CTD cohort to the unaffected cohort, the observed result was contrary to the one expected: a 10 ng/ml increase in 25(OH)D was associated with higher odds of having CTD (OR 2.08, 95% CI 1.27-3.42, p < 0.01). There was no association between 25(OH)D and tic severity. However, a 10 ng/ml increase in 25(OH)D was associated with lower odds of having comorbid ADHD within the CTD cohort (OR 0.55, 95% CI 0.36-0.84, p = 0.01) and was inversely associated with ADHD symptom severity (β = - 2.52, 95% CI - 4.16-0.88, p < 0.01). In conclusion, lower vitamin D levels were not associated with a higher presence or severity of tics but were associated with the presence and severity of comorbid ADHD in children and adolescents with CTD.

Indexed as

Tic DisordersTicsVitamin DAdolescentAttention Deficit Disorder with HyperactivityChildComorbidityCross-Sectional StudiesHumansObsessive-Compulsive DisorderSeverity of Illness IndexTourette SyndromeVitamin DADHDOCDPediatricsTic disorderTouretteVitamin D

Identifiers

PMID33851280
PMCPMC9343310
OpenAlexW3154706028

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.