The assessment of fatigue: Psychometric qualities and norms for the Checklist individual strength

• Published in: Journal of psychosomatic research Vol. 98; pp. 40 - 46
• Main Authors: Worm-Smeitink, M., Gielissen, M., Bloot, L., van Laarhoven, H.W.M., van Engelen, B.G.M., van Riel, P., Bleijenberg, G., Nikolaus, S., Knoop, H.
• Format: Journal Article
• Language: English
• Published: England Elsevier Inc 01.07.2017; Elsevier Science Ltd
• Subjects: Adult; Checklist - methods; Checklist individual strength; Checklists; Chronic fatigue; Chronic fatigue syndrome; Clinical medicine; Clinical outcomes; Exploratory factor analysis; Factor analysis; False positive results; Fatigue; Fatigue - diagnosis; Fatigue questionnaire; Female; Humans; Male; Medical conditions; Motivation; Patient-reported outcomes; Psychiatry; Psychometrics; Psychometrics - methods; Quality Control; Quantitative psychology; Questionnaires; Reliability and validity; Reproducibility of Results; ROC Curve; Severity; Surveys and Questionnaires; Test-Retest reliability; Chronic fatigue; Psychometrics; Patient-reported outcomes; Reliability and validity; Checklist individual strength; Fatigue questionnaire

The Checklist Individual Strength (CIS) measures four dimensions of fatigue: Fatigue severity, concentration problems, reduced motivation and activity. On the fatigue severity subscale, a cut-off score of 35 is used. This study 1) investigated the psychometric qualities of the CIS; 2) validated the...