Complementary medicine use and costs in patients with breast cancer who experienced treatment-related side effects: A cross-sectional survey in Korea

Objectives: Population-based information on the costs of complementary medicine for treatment-related side effects in patients with breast cancer is scarce. We aimed to investigate the prevalence and expenditure on complementary medicine in patients with breast cancer who experienced treatment-related side effects. Design and setting: Two datasets were analyzed: 1) a 2017 survey on direct and indirect costs for treatment-related side effects, which was completed by 100 patients with stage 0-IV breast cancer, and 2) a Korean representative cross-sectional survey (Patient Survey 2014) that examined the prevalence of integrative medicine in 41 patients with breast cancer. Main outcome measures: The direct and indirect costs for treatment-related side effects. Results: In the first dataset, the mean total direct medical cost for complementary medicine was US$1,584 and the mean indirect cost was US$6,988 per patient per year. Some patients (6%) visited non-medical institutions to utilize complementary medicine and additionally spent US$460 per patient per year. Approximately one-third of participants reported a substantial-to-heavy financial burden for using complementary medicine. However, only 17% of patients got information about complementary medicine through their physician. In the second dataset, 49% of patients with breast cancer who were discharged from Korean Medicine hospitals in Patient Survey 2014 data indicated that integrative medicine had been used. Conclusions: Despite some complementary medicine could be reimbursed by National Health Insurance in Korea, a considerable number of patients reported an economic burden associated with their use of complementary medicine. Strategies for guiding patients to receive evidence-based and cost-effective complementary medicine are needed.