Journal
INTERNATIONAL JOURNAL OF CLINICAL ONCOLOGY
Volume 15, Issue 3, Pages 256-262Publisher
SPRINGER TOKYO
DOI: 10.1007/s10147-010-0045-x
Keywords
Cost sharing; Cost-effectiveness analysis; Capecitabine; Bevacizumab; Colorectal neoplasms
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The purpose of our study was to estimate the out-of-pocket payment and cost-effectiveness of capecitabine plus oxaliplatin (XELOX) or XELOX plus bevacizumab from the perspective of patients with metastatic colorectal cancer (MCRC). Based on the NO16966 and NO16967 trials, the mean out-of-pocket payment was calculated from patient-level data. Out-of-pocket payments for 16 cycles (11 months) of first-line chemotherapy and 8 cycles (5 months) of second-line chemotherapy were included. In addition, incremental cost-effectiveness ratios (ICERs) for first-line bevacizumab were calculated by dividing the difference of the out-of-pocket payment by the difference of the mean number of progression-free survival (PFS) years or quality-adjusted PFS (QAPFS) years. The mean out-of-pocket payments for middle-income patients under 70 years of age were JPY 328,000 for 16 cycles of first-line XELOX and JPY 376,000 for XELOX plus bevacizumab. The mean out-of-pocket payment for 8 cycles of second-line XELOX was calculated to be JPY 175,000. Middle-income patients over 70 years of age were required to pay JPY 61,000 and JPY 72,000 for first-line XELOX and XELOX plus bevacizumab, respectively. The ICERs of middle-income patients < 70 years of age were JPY 430,000/PFS-year and JPY 720,000/QAPFS-year, and those of middle-income patients > 70 years of age were JPY 100,000/PFS-year and JPY 170,000/QAPFS-year. We clarified the out-of-pocket payment and cost-effectiveness of chemotherapy of MCRC patients in Japan. Our previous survey shows it is highly possible that many patients prefer to pay that incremental out-of-pocket payment to gain one additional QAPFS year. However, our cost-effectiveness analysis was not conducted from the perspective of society or healthcare payers.
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