Evidence map›Paper›PMID 30850404›Full record

ArticleBMJ open2019

Prevalence and characteristics of chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) in Poland: a cross-sectional study.

Joanna Słomko, Julia L Newton, Sławomir Kujawski, Małgorzata Tafil-Klawe, Jacek Klawe, Donald Staines, Sonya Marshall-Gradisnik, Pawel Zalewski

Abstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Recent research in myalgic encephalomyelitis/chronic fatigue syndrome: an evidence map.Health technology assessment (Winchester, England) · 2025
    Pooled it
  2. Pooled it
  3. Centralized Pain Diagnoses in Older Adults With and Without Cancer.Journal of pain & palliative care pharmacotherapy · 2026
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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

8 authors.

Joanna SłomkoDepartment of Hygiene, Epidemiology and Ergonomy, Uniwersytet Mikolaja Kopernika Collegium Medicum, Bydgoszcz, Poland.
Julia L NewtonInstitute for Cellular Medicine, Newcastle University, Newcastle, UK.
Sławomir KujawskiDepartment of Hygiene, Epidemiology and Ergonomy, Uniwersytet Mikolaja Kopernika Collegium Medicum, Bydgoszcz, Poland.
Małgorzata Tafil-KlaweDepartment of Human Physiology, Uniwersytet Mikolaja Kopernika Collegium Medicum, Bydgoszcz, Poland.
Jacek KlaweDepartment of Hygiene, Epidemiology and Ergonomy, Uniwersytet Mikolaja Kopernika Collegium Medicum, Bydgoszcz, Poland.
Donald StainesMedical Sciences, Griffith University, Southport, Queensland, Australia.
Sonya Marshall-GradisnikMedical Sciences, Griffith University, Southport, Queensland, Australia.
Pawel ZalewskiDepartment of Hygiene, Epidemiology and Ergonomy, Uniwersytet Mikolaja Kopernika Collegium Medicum, Bydgoszcz, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe aim of this study was to estimate the prevalence of chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) and describe illness characteristics in a community population in Poland.

designcross-sectional study.

settingPoland.

participantsOf the cohort of 1400 who self-presented with fatigue only 69 subsequently were confirmed as having CFS/ME using the Fukuda criteria.

main outcome measuresParticipants completed the following screening symptom assessment tools: Chalder Fatigue Scale, Hospital Anxiety and Depression Scale (HADS), Epworth Sleepiness Scale (ESS), Composite Autonomic Symptom Score 31 (COMPASS 31), Quality of Life Scale (QOLS). Haemodynamic and autonomic parameters were automatically measured at rest with a Task Force Monitor.

resultsIn 1308, from 1400 (93%) individuals who identified themselves as fatigued, recognised chronic conditions were identified, for example, neurological (n=280, 21.5%), neurodegenerative (n=200, 15%), psychiatric (n=654, 50%) and immunologic (n=174, 13.5%) disorders. The remaining 69 participants (mean age 38.3±8.5) met the Fukuda defintion for CFS/ME and had baseline objective assessment. The majority had experienced symptoms for over 2 years with 37% having symptoms for 2-5 years and 21.7% for more than 10 years. The COMPASS 31 indicated that 50% have symptoms consistent with orthostatic intolerance. About 43/69 (62%) had Epworth sleepiness scores ≥10, ie, consistent with excessive daytime sleepiness, 26/69 (38%) had significant anxiety and 22/69 (32%) depression measured by HADS A & D. Quality of life is significantly impaired in those with Fukuda criteria CFS (QLS score 64±11) with significant negative relationships between quality of life and fatigue (p<0.0001), anxiety (p=0.0009), depression (p<0.0001) and autonomic symptoms (p=0.04).

conclusionThis is the first study to summarise illness characteristics of Polish CFS/ME patients. Our study has confirmed that fatigue is a common and under-recognised symptom affecting the Polish population.

Indexed as

AdultAgedAnxietyChronic DiseaseCohort StudiesCross-Sectional StudiesDepressionFatigueFatigue Syndrome, ChronicFemaleHumansMaleMiddle AgedPolandPrevalenceQuality of Lifechronic fatigueepidemiologyprevalencequality of life

Identifiers

PMID30850404
PMCPMC6429942

What OpenQuestion holds

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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.