Process / pipelinePhysical and Mental Fatigue Assessment
Chalder Fatigue Scale (CF Scale)
The Chalder Fatigue Scale is an 11-item brief self-report instrument measuring physical and mental fatigue, developed by Trudie Chalder and colleagues at St. Bartholomew's Hospital, London, in 1993. Originally designed for chronic fatigue syndrome (myalgic encephalomyelitis/ME) research, the CFS has been extensively validated across cancer populations, chronic illness, and general populations. The scale offers two scoring options: continuous 0–33 scale for severity measurement or bimodal 0–11 scoring for caseness determination, making it versatile for both research and clinical screening.
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Sources
- Chalder, T., Berelowitz, G., Pawlikowska, T., et al. (1993). Development of a fatigue scale. J Psychosom Res, 37(2), 147–153. DOI: 10.1016/0022-3999(93)90081-P ↗
- Chalder, T., Power, M. J., & Wessely, S. (1996). Chronic fatigue in the community: 'The prevalence and use of health care. J Psychosom Res, 41(2), 197–103. DOI: 10.1016/0022-3999(96)00051-4 ↗