Evidence map›Paper›PMID 34255181›Full record

ArticleJournal of neurology2022

Irritable bowel syndrome and subsequent risk of Parkinson's disease: a nationwide population-based matched-cohort study.

Seo Yeon Yoon, Jaeyong Shin, Seok-Jae Heo, Jee Suk Chang, Mun Kyung Sunwoo, Yong Wook Kim

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Journal of neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.3field-weighted citation impact, top 17% 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

8 citing papers in PubMed, 13 citations in OpenAlex.

  1. Parkinson Disease and the Gut: A Primer for Gastroenterologists.The American journal of gastroenterology · 2025
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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

6 authors at 3 institutions in 1 country.

Seo Yeon YoonDepartment of Physical Medicine and Rehabilitation, Korea University Guro Hospital, Seoul, Republic of Korea.
Jaeyong ShinDepartment of Preventive Medicine and Public Health, Yonsei University College of Medicine, Seoul, Republic of Korea.
Seok-Jae HeoDepartment of Biostatistics and Computing, Yonsei University Graduate School, Seoul, Republic of Korea.
Jee Suk ChangDepartment of Radiation Oncology, Yonsei University College of Medicine, Seoul, Republic of Korea.
Mun Kyung Sunwoo *Department of Neurology, Bundang Jesaeng General Hospital, 20, Seohyeon-ro 180beon-gil, Bundang-gu, 13590, Seongnam-si, Gyeonggi-do, Republic of Korea. jelemy0322@gmail.com.
Yong Wook Kim *Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 03722, Republic of Korea. ywkim1@yuhs.ac.ORCID http://orcid.org/0000-0002-5234-2454
Yonsei University · KRBundang Jesaeng Hospital · KRKorea University Medical Center · KR

Funding

National Research Foundation of Korea 2020R1C1C1006867
6 · The paper itself

Abstract

backgroundGastrointestinal dysfunction (GI) is the most prevalent non-motor symptom of Parkinson's disease (PD), and its role in the risk of PD has been studied. In this study, we tried to evaluate whether irritable bowel syndrome (IBS) increased the risk of PD development stratified by sex, age, and IBS duration using a large nationwide cohort in Korea.

methodsPatients aged ≥ 20 years with a primary diagnosis of IBS (ICD-10 codes: G56) more than three times were selected. A randomly matched cohort without IBS was enrolled by exact matching patients for sex, age, socioeconomic status, comorbidities, and year of enrollment to the IBS group with a ratio of 1:3. Cause-specific Cox regression models were used to identify hazards associated with PD development depending on the presence of IBS during the 11-year follow-up period.

resultsIn total, 285,064 patients were enrolled in the study: 71,806 in the IBS cohort and 213,258 in the comparison cohort. Cause-specific Cox regression model showed a hazard ratio of 1.436 (95% CI, 1.226-1.682) for PD development in the IBS cohort, which is consistent in both male and female sexes. Subgroup analyses according to age groups showed that IBS increased PD risk only in individuals ≥ 65 years (HR = 1.449, 95% CI, 1.207-1.741).

conclusionsWe found temporal relationship between IBS and PD at aged ≥ 65 years. There might be a possibility that IBS was an early manifestation of PD, and future studies for causal link between the two diseases to elucidate biomechanism are warranted.

Indexed as

Irritable Bowel SyndromeParkinson DiseaseAdultAgedCohort StudiesComorbidityFemaleHumansIncidenceMaleProportional Hazards ModelsRisk FactorsYoung AdultCohort studyIrritable bowel syndromeNon-motor symptomsParkinson’s disease

Identifiers

PMID34255181
OpenAlexW3182598472

What OpenQuestion holds

Textmetadata
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.