Evidence map›Paper›PMID 33195358›Full record

SynthesisFrontiers in medicine2020

The Effect of Vitamin D Supplementation on Rheumatoid Arthritis Patients: A Systematic Review and Meta-Analysis.

Yuanyuan Guan, Yang Hao, Yun Guan, Huaien Bu, Hongwu Wang

Open access · goldAbstract readSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Frontiers in medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 2 pooled it
5.8field-weighted citation impact, top 3% 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

33 citing papers in PubMed, 2 syntheses or guidelines pooled it, 61 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Trial
  4. Review
  5. Observational
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Vitamin D affects antiphospholipid syndrome by regulating T cells (Review).International journal of molecular medicine · 2025
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  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

5 authors at 3 institutions in 2 countries.

Yuanyuan GuanGraduate School, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
Yang HaoDepartment of Traditional Chinese Medicine, Tianjin First Central Hospital, Tianjin, China.
Yun GuanCrawford School of Public Policy, Asia and Pacific College, Australian National University, Canberra, ACT, Australia.
Huaien BuSchool of Health Sciences and Engineering, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
Hongwu WangSchool of Health Sciences and Engineering, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
Tianjin University of Traditional Chinese Medicine · CNAustralian National University · AUTianjin First Center Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Indexed as

health medicineinflammatory responsemeta-analysisrheumatoid arthritisvitamin D

Identifiers

PMID33195358
PMCPMC7661491
OpenAlexW3095841992

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.