Validation of the German version of the Cancer Fatigue Scale (CFS-D)

doi:10.1111/j.1365-2354.2007.00799.x

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Wiley InterScience

European Journal of Cancer Care

Volume 17 Issue 1, Pages 33 - 41

Published Online: 11 Jun 2007

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Original article

Validation of the German version of the Cancer Fatigue Scale (CFS-D)

M. KRÖZ, md ¹ , R. ZERM, md ¹ , M. REIF, phd ² , H.B. VON LAUE, md ³ , F. SCHAD, md ¹ , A. BÜSSING, md ⁴ , C. BARTSCH, phd ⁵ , G. FEDER, md ⁶ & M. GIRKE, md ¹

¹ Havelhöhe Research Institute (FIH) at the Community Hospital Havelhöhe, Berlin, Germany, ² Institute for Clinical Research (IKF), Berlin, ³ Oncological Practice, Öschelbronn, ⁴ Chair of Medical Theory and Complementary Medicine, University of Witten/Herdecke, Witten, ⁵ Center for Research in Medical and Natural Science, University of Tübingen, Tübingen, ⁶ Barts and The London, Queen Mary's School of Medicine and Dentistry, London, UK

Correspondence to Matthias Kröz, Forschungsinstitut Havelhöhe (FIH) at the Community Hospital Havelhöhe, Berlin, Germany (e-mail: mkroez@havelhoehe.de).

KEYWORDS

Cancer Fatigue Scale • cancer fatigue syndrome • autonomic regulation • health-related quality of life • validation study

KRÖZ M., ZERM R., REIF M., VON LAUE H.B., SCHAD F., BÜSSING A., BARTSCH C., FEDER G. & GIRKE M. (2008) European Journal of Cancer Care17, 33–41
Validation of the German version of the Cancer Fatigue Scale (CFS-D)

ABSTRACT

Fatigue is a very important factor determining the quality of life in patients with malignancies. Cancer fatigue occurs with anaemia, during and after chemo- or radiotherapy and in patients with advanced tumours. The Cancer Fatigue Scale (CFS) is a three-dimensional inventory with 15 items which was originally developed in Japan. We present the results of a validation study of the German version (CFS-D) of this instrument. The CFS-D was administered to 114 participants in a matched-pair study. In total, 57 (41 women) of the participants had malignant conditions, and 57 (41 women) were healthy volunteers. The Fatigue Numerical Scale was used to test convergence. The physical and performance status of the cancer patients was assessed by the Karnofsky-Index. Criteria for testing multidimensionality were the Hospital Anxiety and Depression Scale, and the questionnaire on autonomic regulation. We generated a three-dimensional inventory of the CFS-D with the subscales physical fatigue/vitality, cognitive and affective fatigue. The reliability results for the complete scale: Cronbach's α: r_α = 0.94, retest reliability: r_rt = 0.82. The convergence criteria correlate between r = 0.44–0.65 (all P < 0.001). The CFS-D is highly reliable and has construct validity in relation to other measures.

Accepted 12 February 2007

DIGITAL OBJECT IDENTIFIER (DOI)

10.1111/j.1365-2354.2007.00799.x About DOI