Some have argued that these changes should not be seen as merely different scoring schemes, but as different versions of the same scale. The data showed that 22 participants showed improvement at the primary trial endpoint based on one scoring method, while the other scoring method showed a decline. Internal consistency and convergent validity[ edit edit source ] The Chalder fatigue scale has been shown to have good internal consistency, as indicated by a split half reliabilities of 0. Cronbach alpha for the item fatigue scale Chalder et al.

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Fatigue Scales and Chronic Fatigue Syndrome: Issues of Sensitivity and Specificity

Bibliography Fereshtehnejad, S. Find it on PubMed Garber, C. Find it on PubMed Ghajarzadeh. Disability and Rehabilitation, 35 18 : Find it on PubMed Grace, J. Find it on PubMed Hagell, P. Find it on PubMed Herlofson, K.


Tag: Chalder fatigue scale

Abstract Few studies have explored issues of sensitivity and specificity for using the fatigue construct to identify patients meeting chronic fatigue syndrome CFS criteria. In this article, we examine the sensitivity and specificity of several fatigue scales that have attempted to define severe fatigue within CFS. Selecting questions, scales and cut off points to measure fatigue must be done with extreme care in order to successfully identify CFS cases. Keywords: chronic fatigue syndrome, fatigue, fatigue scales, sensitivity and specificity There have been relatively few studies assessing the sensitivity and specificity of fatigue scales which are frequently used to identify individuals with chronic fatigue syndrome CFS and differentiate them from healthy controls. The present investigation consists of two distinct studies, both of which employ samples of individuals with CFS and controls, and to assess the effectiveness of several well known fatigue instruments in discriminating between these two groups by utilizing Receiver Operating Characteristic ROC curve analyses. The Fukuda et al. This case definition requires an individual to experience six or more months of persisting or recurring chronic fatigue and the co-occurrence of four of eight additional core symptoms.


Chalder fatigue scale

Search Menu The Fatigue Scale, sometimes referred to as the Chalder Fatigue Scale the CFQ—to differentiate it from chronic fatigue syndrome or CFS , is a self-administered questionnaire for measuring the extent and severity of fatigue within both clinical and non-clinical, epidemiological populations. Tiredness and fatigue are important in both academic and applied occupational medicine—and the understanding of the link between them and employee health, performance, safety and general workability continues to grow. The need for a reliable self-completion tool that can measure this subjective condition, either in extreme clinical cases or in routine day-to-day functioning, has never been greater [ 3 ]. As a short questionnaire, phrased in simple English with a straightforward answering system, it provides a brief tool to measure both physical and psychological fatigue.

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