Paulien G Westhoff1, Mathilde G E Verdam2, Frans J Oort3, Jan J Jobsen4, Marco van Vulpen5, Jan Willem H Leer6, Corrie A M Marijnen7, Alexander de Graeff8, Yvette M van der Linden7. 1. Department of Radiotherapy, University Medical Center Utrecht, Utrecht, the Netherlands; Department of Radiotherapy, Radboud University Medical Center, Nijmegen, the Netherlands. Electronic address: p.g.westhoff@umcutrecht.nl. 2. Department of Medical Psychology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands. 3. Research Institute of Child Development and Education, Department of Medical Psychology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands. 4. Department of Radiotherapy, Medisch Spectrum Twente, Enschede, the Netherlands. 5. Department of Radiotherapy, University Medical Center Utrecht, Utrecht, the Netherlands. 6. Department of Radiotherapy, Radboud University Medical Center, Nijmegen, the Netherlands. 7. Department of Radiotherapy, Leiden University Medical Center, Leiden, the Netherlands. 8. Department of Medical Oncology, University Medical Center Utrecht, Utrecht, the Netherlands.
Abstract
PURPOSE: To study the course of quality of life (QoL) after radiation therapy for painful bone metastases. PATIENTS AND METHODS: The Dutch Bone Metastasis Study randomized 1157 patients with painful bone metastases between a single fraction of 8 Gy and 6 fractions of 4 Gy between 1996 and 1998. The study showed a comparable pain response of 74%. Patients filled out weekly questionnaires for 13 weeks, then monthly for 2 years. In these analyses, physical, psychosocial, and functional QoL domain scores and a score of general health were studied. Mixed modeling was used to model the course of QoL and to study the influence of several characteristics. RESULTS: In general, QoL stabilized after 1 month. Psychosocial QoL improved after treatment. The level of QoL remained stable, steeply deteriorating at the end of life. For most QoL domains, a high pain score and intake of opioids were associated with worse QoL, with small effect sizes (-0.11 to -0.27). A poor performance score was associated with worse functional QoL, with a medium effect size (0.41). There is no difference in QoL between patients receiving a single fraction of 8 Gy and 6 fractions of 4 Gy, except for a temporary worsening of physical QoL after 6 fractions. CONCLUSION: Although radiation therapy for painful bone metastases leads to a meaningful pain response, most domains of QoL do not improve after treatment. Only psychosocial QoL improves slightly after treatment. The level of QoL is related to the actual survival, with a rather stable course of QoL for most of the remaining survival time and afterward a sharp decrease, starting only a few weeks before the end of life. Six fractions of 4 Gy lead to a temporary worse physical QoL compared with a single fraction of 8 Gy.
RCT Entities:
PURPOSE: To study the course of quality of life (QoL) after radiation therapy for painful bone metastases. PATIENTS AND METHODS: The Dutch Bone Metastasis Study randomized 1157 patients with painful bone metastases between a single fraction of 8 Gy and 6 fractions of 4 Gy between 1996 and 1998. The study showed a comparable pain response of 74%. Patients filled out weekly questionnaires for 13 weeks, then monthly for 2 years. In these analyses, physical, psychosocial, and functional QoL domain scores and a score of general health were studied. Mixed modeling was used to model the course of QoL and to study the influence of several characteristics. RESULTS: In general, QoL stabilized after 1 month. Psychosocial QoL improved after treatment. The level of QoL remained stable, steeply deteriorating at the end of life. For most QoL domains, a high pain score and intake of opioids were associated with worse QoL, with small effect sizes (-0.11 to -0.27). A poor performance score was associated with worse functional QoL, with a medium effect size (0.41). There is no difference in QoL between patients receiving a single fraction of 8 Gy and 6 fractions of 4 Gy, except for a temporary worsening of physical QoL after 6 fractions. CONCLUSION: Although radiation therapy for painful bone metastases leads to a meaningful pain response, most domains of QoL do not improve after treatment. Only psychosocial QoL improves slightly after treatment. The level of QoL is related to the actual survival, with a rather stable course of QoL for most of the remaining survival time and afterward a sharp decrease, starting only a few weeks before the end of life. Six fractions of 4 Gy lead to a temporary worse physical QoL compared with a single fraction of 8 Gy.
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