The primary objective of this study was to validate the Dutch version of the Quality of Life – Cancer Survivor (QOL-CS) questionnaire using a group of Dutch prostate cancer survivors. The QOL-CS was specifically designed to measure the quality of life of long-term cancer survivors. We performed a population-based, cohort study of 784 prostate cancer survivors who were diagnosed with prostate cancer between 1994 and 1998. To determine the test–retest reliability, second questionnaires were sent to 109 participants, of whom 103 (94%) returned the forms. The quality of life in Dutch long-term prostate cancer survivors was adequately measured by the physical, psychological and social well-being subscale and can be used in order to measure the specific aspects of quality of life important to cancer survivors. However, as the subscale spiritual well-being showed a low internal consistency, which could be related to cultural background, it seems to be appropriate to evaluate the validity and reliability of the QOL-CS in other cultural settings.
Cancer survivor Prostate cancer Cancer Quality of life Validation