Evidence map›Paper›PMID 30412998›Full record

ArticleNutrients2018

Latent Iron Deficiency as a Marker of Negative Symptoms in Patients with First-Episode Schizophrenia Spectrum Disorder.

Sung-Wan Kim, Robert Stewart, Woo-Young Park, Min Jhon, Ju-Yeon Lee, Seon-Young Kim, Jae-Min Kim, Paul Amminger, Young-Chul Chung, Jin-Sang Yoon

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 12% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. The Potential of Hair Matrix for Biomarker Analysis in Schizophrenia.International journal of molecular sciences · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  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

10 authors at 4 institutions in 3 countries.

Sung-Wan KimDepartment of Psychiatry, Chonnam National University Medical School, Gwangju 61469, Korea. swkim@chonnam.ac.kr.ORCID 0000-0002-6739-2163
Robert StewartInstitute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 8AF, UK. robert.stewart@kcl.ac.uk.
Woo-Young ParkMindlink, Gwangju Bukgu Community Mental Health Center, Gwangju 61220, Korea. fmjtt111@naver.com.
Min JhonDepartment of Psychiatry, Chonnam National University Medical School, Gwangju 61469, Korea. skyxmin@naver.com.
Ju-Yeon LeeDepartment of Psychiatry, Chonnam National University Medical School, Gwangju 61469, Korea. dabium@hanmail.net.
Seon-Young KimDepartment of Psychiatry, Chonnam National University Medical School, Gwangju 61469, Korea. sykimpsy@chonnam.ac.kr.
Jae-Min KimDepartment of Psychiatry, Chonnam National University Medical School, Gwangju 61469, Korea. jmkim@chonnam.ac.kr.
Paul AmmingerOrygen, The National Centre of Excellence in Youth Mental Health, Centre for Youth Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia. amminger@unimelb.edu.au.
Young-Chul ChungDepartment of Psychiatry, Chonbuk National University Medical School, Jeonju 54907, Korea. chungyc@jbnu.ac.kr.
Jin-Sang YoonDepartment of Psychiatry, Chonnam National University Medical School, Gwangju 61469, Korea. jsyoon@chonnam.ac.kr.
Chonnam National University · KRJeonbuk National University · KRKing's College London · GBThe University of Melbourne · AU

Funding

Medical Research Council MC_PC_17214Ministry of Health and Welfare HM15C1140National Research Foundation of Korea NRF-2017R1A2B4010830
6 · The paper itself

Abstract

Iron deficiency may alter dopaminergic transmission in the brain. This study investigated whether iron metabolism is associated with negative symptoms in patients with first-episode psychosis. The study enrolled 121 patients with first-episode schizophrenia spectrum disorder, whose duration of treatment was 2 months or less. Negative symptoms were measured using the Positive and Negative Syndrome Scale (PANSS) and Clinician-Rated Dimensions of Psychosis Symptom Severity (Dimensional) scale of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). Prominent negative symptoms were defined as moderate or severe negative symptoms on the Dimensional scale of the DSM-5. Iron deficiency was defined as a serum ferritin ≤ 20 ng/mL. Patients with iron deficiency were significantly more likely to have prominent negative symptoms (45.2 vs. 22.2%;

Indexed as

Iron DeficienciesAdultAntipsychotic AgentsBiomarkersDopamineFemaleHumansIronMaleSchizophreniaYoung AdultAntipsychotic AgentsBiomarkersDopamineIronferritinfirst-episodeironnegative symptompsychosisschizophrenia

Identifiers

PMID30412998
PMCPMC6266210
OpenAlexW2900399368

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.