Gout and Risk of Fracture in Women: A Prospective Cohort Study
Abstract
OBJECTIVE: Uric acid may be linked to bone health through its antioxidant or prooxidant effects, thereby affecting bone resorption and formation, or through its dual inhibition of vitamin D activation and parathyroid hormone production. Results of prior studies on the relationship between uric acid and bone mineral density have been conflicting. This prospective study was undertaken to examine the relationship between gout, a disease characterized by hyperuricemia and inflammation, and risk of hip or wrist fracture in women.
METHODS: We conducted a prospective observational study of gout and risk of incident wrist and hip fracture in women participating in the Nurses' Health Study (n = 103,799 at baseline, with 14 years of follow-up for the wrist fracture analysis and 22 years of follow-up for the hip fracture analysis). Gout history and incident cases of wrist and hip fracture were assessed by biennial questionnaire. Cox proportional hazards models were used to simultaneously adjust for potential confounders.
RESULTS: In this cohort, there were 3,769 incident wrist fractures (1990-2004) and 2,147 incident hip fractures (1990-2012), with 107 wrist fractures and 117 hip fractures occurring in participants with gout. In those women with a history of gout compared with women without gout, the multivariable-adjusted relative risk of wrist fracture was 1.12 (95% confidence interval [95% CI] 0.92-1.36) and the multivariable-adjusted relative risk of hip fracture was 1.38 (95% CI…
How strong is the evidence?
Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 103,799 participants or records.
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