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Chronic Fatigue Syndrome (CFS) diagnostic score
Researchers from the University Medical Center Groningen developed the Chronic Fatigue Syndrome (CFS) diagnostic score for adult participants using the Fatigue (CDC) variables from 2A Questionnaire 2 and 3A Questionnaire 1. (sections: Diseases & symptoms (Fatigue (CDC)) and secondary & linked variables).
The CFS diagnostic score can be requested in the Lifelines catalogue or by mail (data@lifelines.nl).
Calculation of CFS diagnostic score
To identify participants who get a positive Chronic Fatigue Syndrome (CFS) diagnostic score, the 1994 Centers for Disease Control and Prevention (CDC) criteria are taken into consideration. More specifically, participants have to meet three specific criteria in order to receive the CFS diagnosic score. In other words, if all criteria are met the participant receives a positive diagnostic score and when at least one of the criteria is zero the participant receives a negative CFS diagnostic score. Below the three criteria are highlighted including details on the included statements in the calculation.
1. Experiencing chronic fatigue for 6 or more months
2. Report that the fatigue significantly interfered with daily activities and work
3. Report that concurrently four or more of the eight additional symptoms are present
The eight additional symptoms are as follows: sore throat, tender lymph nodes, muscle pain, joint pain, headaches, unrefreshing sleep, unusual fatigue after exertion, forgetfulness, and difficulty concentrating.
