Disease burden of fractures among patients with osteoporosis in Japan: health-related quality of life, work productivity and activity impairment, healthcare resource utilization, and economic costs

Abstract

Osteoporosis remains undertreated in Japan, and bone fractures are the most frequent complications imposing heavy burden on individuals and the community. This paper investigates the clinical and economic burden of fractures among osteoporosis patients in Japan. The Japan National Health and Wellness Survey 2012-2014 database was used for analysis. Respondents aged ≥ 50 years and indicated a physician diagnosis of osteoporosis (N = 1107) were categorized into three subgroups: no prior fracture (N = 693), single fracture (N = 242), and multiple (≥ 2) fractures (N = 172). Health-related quality of life (HRQoL), work productivity and activity impairment, healthcare resource utilization and associated direct and indirect costs were compared across three fracture subgroups adjusting for respondents' sociodemographic and clinical characteristics using generalized linear regression models. The estimated fracture prevalence among respondents with osteoporosis who were ≥ 50 years was 37.4%, of whom 41.5% had multiple fractures. Relative to osteoporosis respondents with no fracture and with single fracture, those with multiple fractures reported significant higher disability in HRQoL, more healthcare resource utilization, and were associated with higher direct costs. Improved treatment of fractures among osteoporosis patients is necessary and may help reduce the clinical and economic burden in this osteoporosis population.

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