CFS and myalgic encephalomyelitis (ME) case definitions compared

Jason and colleagues at DePaul Univ. compared cases who met criteria for CFS (Fukuda, 1994), ME/CFS (Carruthers, 2003) and ME (Dowsett, 1990; Dowsett, 1994; Goudsmit, 2009). When applied to a population meeting the CFS case definition, ME/CFS and ME criteria appear to select a more severe subset of patients. Note: the latest ME criteria (Carruthers, 2011) was not evaluated in this study. (Evaluation & the Health Professions, Dec. 7, 2011)

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