Evidence map›Paper›PMID 30872593›Full record

ArticleScientific reports2019

Assessing whether the association between rheumatoid arthritis and schizophrenia is bidirectional: A nationwide population-based cohort study.

Shih-Fen Chen, Ling-Yi Wang, Jen-Huai Chiang, Chung-Y Hsu, Yu-Chih Shen

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
2.4field-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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Multimorbidity and the Etiology of Schizophrenia.Current psychiatry reports · 2024
    Review
  6. Review
  7. Herpes Zoster Risk in Patients with Rheumatoid Arthritis and Its Association with Medications Used.International journal of environmental research and public health · 2023
    Observational
  8. Article
  9. Neuroimmune Crosstalk in Rheumatoid Arthritis.International journal of molecular sciences · 2022
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. 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

5 authors at 3 institutions in 1 country.

Shih-Fen ChenCenter of Medical Genetics, Tzu Chi General Hospital, Hualien, Taiwan.
Ling-Yi WangEpidemiology and Biostatistics Consulting Center, Department of Medical Research, and Department of Pharmacy, Tzu Chi General Hospital, Hualien, Taiwan.
Jen-Huai ChiangManagement Office for Health Data, China Medical University Hospital, and College of Medicine, China Medical University, Taichung, Taiwan.
Chung-Y HsuGraduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.
Yu-Chih ShenDepartment of Psychiatry, Tzu Chi General Hospital, and School of Medicine, Tzu Chi University, Hualien, Taiwan. shengmp@gmail.com.
China Medical University Hospital · TWNational Yang Ming Chiao Tung University · TWTzu Chi University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since many studies have shown a reduction in the incidence of rheumatoid arthritis (RA) in patients with schizophrenia (SCZ), little effort has been devoted to studying this link in the Asian population. Moreover, the relationship between these two disorders could be bidirectional, but the influence of RA on the SCZ incidence is unclear. The study aims to determine whether there is a bidirectional association between RA and SCZ in an Asian population. We analyzed a 10-year population- based longitudinal cohort using the National Health Insurance Research Database of Taiwan. In the first analysis, we included a total of 58,847 SCZ patients and 235,382 non-SCZ controls, and in the second analysis, a total of 30,487 RA patients and 121,833 non-RA controls, both matched by gender, age, and index date. Cox regression analyses were performed to examine the risk of RA incidence in the first analysis and the risk of SCZ incidence in the second analysis. The main finding of this study was the discovery of a lower incidence of RA in patients with SCZ (hazard ratio (HR): 0.48, 95% confidence interval (95% CI): 0.31-0.77) after adjustment for baseline demographics and comorbidities. Additionally, the presence of RA predicted a reduced incidence rate for SCZ, but the estimate was not statistically significant (HR: 0.77, 95% CI: 0.44-1.37). The study found a unidirectional association between RA and SCZ. However, RA has an age of onset later than RA, and the protective effect of RA on SCZ incidence would be biased due to the limited number of cases.

Indexed as

AdultAge DistributionArthritis, RheumatoidFemaleHumansIncidenceLongitudinal StudiesMaleMiddle AgedRegression AnalysisSchizophreniaTaiwanYoung Adult

Identifiers

PMID30872593
PMCPMC6418125
OpenAlexW2921405143

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.