Hardt, J, Buchwald, D, Wilks, D et al. · Journal of psychosomatic research · 2001 · DOI
This study measured how ME/CFS affects daily life and well-being in patients from the United States, United Kingdom, and Germany. Researchers found that patients in all three countries experienced very similar impacts on their quality of life—significantly worse than healthy people across most areas measured, including physical function, emotional health, and energy levels. The findings suggest that ME/CFS affects people similarly regardless of where they live.
This is one of the first international studies showing that ME/CFS causes consistent and severe impacts on quality of life across different healthcare systems and populations. This finding validates the global burden of the disease and suggests that underlying disease mechanisms may be similar worldwide, which is important for developing treatments that could help patients everywhere.
This study does not establish what causes the poor quality of life in ME/CFS patients or whether biological differences exist between patients in different countries. It also cannot explain why quality of life is impaired in these specific ways, nor does it track how quality of life changes over time or in response to treatments.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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