ReviewJournal of clinical medicine2021
Prevalence of Chronic Fatigue Syndrome (CFS) in Korea and Japan: A Meta-Analysis.
Review in Journal of clinical medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.
- Recent research in myalgic encephalomyelitis/chronic fatigue syndrome: an evidence map.Health technology assessment (Winchester, England) · 2025Pooled it
- Chinese herbal medicine for the treatment of chronic fatigue syndrome: A systematic review and meta-analysis.Frontiers in pharmacology · 2022Pooled it
- Human Endogenous Retroviruses in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Emerging Roles in Pathogenesis, Immunity, Biomarkers and Therapeutics.International journal of molecular sciences · 2026Review
- The emerging role of exosomal LncRNAs in chronic fatigue syndrome: from intercellular communication to disease biomarkers.Frontiers in molecular biosciences · 2025Review
- Joint Flexibility and Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After Mononucleosis.Clinical therapeutics · 2024Article
- Clinical evidence of the link between gut microbiome and myalgic encephalomyelitis/chronic fatigue syndrome: a retrospective review.European journal of medical research · 2024Review
- The potential role of ocular and otolaryngological mucus proteins in myalgic encephalomyelitis/chronic fatigue syndrome.Molecular medicine (Cambridge, Mass.) · 2024Article
- Integrated 'omics analysis for the gut microbiota response to moxibustion in a rat model of chronic fatigue syndrome.Journal of traditional Chinese medicine = Chung i tsa chih ying wen pan · 2023Article
- Special Issue "Chronic Fatigue Syndrome/Myalgic Encephalomyelitis: Diagnosis and Treatment".Journal of clinical medicine · 2022Article
- A description of the current status of chronic fatigue syndrome and associated factors among university students in Wuhan, China.Frontiers in psychiatry · 2022Article
- Male vs. Female Differences in Responding to Oxygen-Ozone Autohemotherapy (OJournal of clinical medicine · 2021Article
- Patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) Greatly Improved Fatigue Symptoms When Treated with Oxygen-Ozone Autohemotherapy.Journal of clinical medicine · 2021Article
- Nationwide epidemiological characteristics of chronic fatigue syndrome in South Korea.Journal of translational medicine · 2021Article
- Moxibustion for Chronic Fatigue Syndrome: A Systematic Review and Meta-Analysis.Evidence-based complementary and alternative medicine : eCAM · 2021Review
- Evaluating the Effects ofIranian journal of pharmaceutical research : IJPRArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundMyalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a long-term disabling illness accompanied by fatigue unsolved by rest. However, ME/CFS is a poorly understood illness that lacks a universally accepted pathophysiology and treatment. A lack of CFS-related studies have been conducted in Asian countries. This study aimed to estimate and compare the prevalence of ME/CFS in Korea and Japan and conducted a meta-analysis.
methodsWe searched PubMed, EMBASE, Cochrane, and KMBASE for population-based prevalence studies of the two countries and synthesized the data according to the Fukuda case definition.
resultsOf the eight studies (five in Korea, three in Japan) included, the total prevalence rate of Korean studies was 0.77% (95% CI 0.34-1.76), and 0.76% (95% CI 0.46-1.25) for the Japanese studies. The prevalence rate in females was approximately two-fold higher than males in Korean studies (1.31% female vs. 0.60% male), while the gender difference was less obvious in Japanese studies (0.76% female vs. 0.65% male).
conclusionsFurther epidemiology studies on the female ME/CFS prevalence rate between countries may be required.
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Registered trials
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.