4.6 Article

Stroke and osteoporosis: a Taiwan cohort study

Journal

POSTGRADUATE MEDICAL JOURNAL
Volume 97, Issue 1146, Pages 211-216

Publisher

BMJ PUBLISHING GROUP
DOI: 10.1136/postgradmedj-2019-136959

Keywords

osteoporosis; cohort study; stroke

Funding

  1. Kaohsiung Medical University Hospital [KMUH105-5M17, KMUH106-6T09, KMUH108-8M23, KMU-Q108029]

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This study aimed to estimate osteoporosis risk in Taiwan patients who had a stroke. The results showed that the risk of osteoporosis was 1.82-fold higher in patients with a history of stroke compared to those without. The impact of stroke on osteoporosis risk was more significant in males and younger age groups. Addressing stroke-targeted treatment modalities may help minimize adverse outcomes of osteoporosis.
Background Osteoporosis and stroke are major health problems that have potentially overlapping pathophysiological mechanisms. The aim of this study was to estimate osteoporosis risk in Taiwan patientswho had a stroke. Method This study retrieved data contained in the Taiwan National Health Insurance Research Database for a population-based sample of consecutive patients either hospitalised for stroke or treated for stroke on an outpatient basis. A total of 7550 newly diagnosed patientswho had a stroke were enrolled during 1996-2010. Osteoporosis risk in these patients was then compared with a matched group of patients who had not had a stroke randomly selected from the database at a ratio of 1:4 (n=30 200). The relationship between stroke history and osteoporosis risk was estimated with Cox proportional hazard regression models. Results During the follow-up period, osteoporosis developed in 1537 patients who had a stroke and in 5830 patients who had not had a stroke. The incidence of osteoporosis for cohorts with and without stroke was 32.97 and 14.28 per 1000 person-years, respectively. After controlling for covariates, the overall risk of osteoporosis was 1.82-fold higher in the stroke group than in the non-stroke group. The relative osteoporosis risk contributed by stroke had apparently greater impact among male gender and younger age groups. Conclusion History of stroke is a risk factor for osteoporosis in Taiwan. Much attention to stroke-targeted treatment modalities might minimise adverse outcomes of osteoporosis.

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