Evidence map›Paper›PMID 32144328›Full record

ArticleScientific reports2020

Anemia and the risk of Parkinson's disease in Korean older adults: A nationwide population-based study.

In Young Cho, Dong Wook Shin, Younjin Roh, Wooyoung Jang, Jin Whan Cho, Eun Ae Lee, Hyeonyoung Ko, Kyungdo Han, Jun Hyun Yoo

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 28% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Dietary Factors Affect Brain Iron Accumulation and Parkinson's Disease Risk.medRxiv : the preprint server for health sciences · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Movement Disorders and Hematologic Diseases.Movement disorders clinical practice · 2021
    Review
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

9 authors at 5 institutions in 1 country.

In Young ChoDepartment of Family Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea.
Dong Wook ShinDepartment of Family Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea. dwshin.md@gmail.com.
Younjin RohDepartment of Family Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea.
Wooyoung JangDepartment of Neurology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, 25440, Republic of Korea.ORCID http://orcid.org/0000-0002-4808-7083
Jin Whan ChoDepartment of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea.
Eun Ae LeeDepartment of Family Medicine, Hansol Hospital, Seoul, 05616, Korea.
Hyeonyoung KoDepartment of Family Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, 03181, Korea.
Kyungdo HanDepartment of Statistics and Actuarial Science, Soongsil University, Seoul, 06978, Korea.
Jun Hyun YooDepartment of Family Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea. drjhyoo@gmail.com.
Samsung Medical Center · KRHansol Chemical (South Korea) · KRKangbuk Samsung Hospital · KRSoongsil University · KRUlsan College · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Evidence of the association between anemia and risk of PD (Parkinson's disease) have been accumulating. This study aimed to examine the relationship between anemia and risk of PD in Korean older adults. Korean adults aged 50 years or older who participated in the Korean National Screening Program (n = 12,342,278) between 2009 and 2013 were followed until 2015. Cox proportional hazards regression models were used to calculate the hazard ratio (HR) of PD, and participants were followed for a mean period of 5.0 years. At the end of follow-up, 3,844 adults were diagnosed with PD. After adjusting for potential confounders, participants with anemia had decreased risk of PD compared to adults without anemia (adjusted HR (aHR) 0.894, 95% CI: 0.809-0.989). Furthermore, aHR of PD was 0.698 (95% CI: 0.546-0.891) in moderate to severe anemia and 0.938 (95% CI: 0.843-1.044) in mild anemia. The protective effect of anemia was also more profound in men (aHR 0.888, 95% CI: 0.774-1.02) than in women (aHR 0.905, 95% CI: 0.782-1.048). In conclusion, anemia was associated with lower risk of PD, particularly for patients with moderate to severe anemia. Our study suggests that further studies may be needed to clarify the relationship between anemia and PD.

Indexed as

AgedAged, 80 and overAnemiaComorbidityDisease SusceptibilityFemaleHumansMaleMiddle AgedParkinson DiseasePopulation SurveillanceProportional Hazards ModelsRisk AssessmentRisk Factors

Identifiers

PMID32144328
PMCPMC7060334
OpenAlexW3009252469

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.