Quality of Life Research

, Volume 10, Issue 2, pp 165-173

Comparison of German language versions of the QWB-SA and SF-36 evaluating outcomes for patients with prostate disease

  • D. FroschAffiliated withDepartment of Family and Preventive Medicine, University of CaliforniaSDSU/UCSD Joint Doctoral Program in Clinical Psychology
  • , F. PorzsoltAffiliated withPsychotherapie und Psychosomatische Medizin, Universität Ulm
  • , R. HeicappellAffiliated withDepartment of Urology, Benjamin Franklin University
  • , K. KleinschmidtAffiliated withDepartment of Urology, University Hospital Ulm
  • , M. SchatzAffiliated withDepartment of General Surgery, University Hospital Ulm
  • , S. WeinknechtAffiliated withDepartment of Urology, Urban Hospital
  • , R. M. KaplanAffiliated withDepartment of Family and Preventive Medicine, University of California

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Background: The quality of well-being scale (QWB) and the Medical Outcome Study 36-item short form (SF-36) are alternative methods for measuring general health outcomes. Few studies compare these approaches against one another and no studies have compared German language versions. Method: A German language version of the self-administered quality of well-being scale (QWB-SA) was developed using forward and back translation methods. The German QWB-SA and a German language version of the SF-36 were administered to clinical population groups with current diagnoses of prostate cancer, benign hyperplasia of the prostate, colon cancer, and rectal cancer. Data were obtained from four German clinics. In addition to the quality of life measures, data on cancer stage and disease state were obtained. Results: The QWB-SA and SF-36 were highly correlated. The QWB-SA was systematically related to disease state. Those with no symptomatic evidence had the highest scores followed by those who were stable with no metastatic disease and those with metastatic progression. Similar patterns were found for most SF-36 scales although the SF-36 failed to discriminate between those with no evidence of disease and those with stable disease without metastasis. Conclusions: Both the QWB-SA and SF-36 perform as expected using German language translations. Although both measures differentiate patients with metastasis from those without symptoms, the QWB-SA better differentiated those with no evidence of disease from those with stable disease without metastasis.

Prostate cancer Quality of life Quality of well-being scale SF-36