Journal
ARTHRITIS & RHEUMATISM-ARTHRITIS CARE & RESEARCH
Volume 61, Issue 7, Pages 885-892Publisher
WILEY-LISS
DOI: 10.1002/art.24612
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Funding
- NIAMS NIH HHS [T32 AR007442-22, T32 AR007442] Funding Source: Medline
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Objective. To assess the association between hyperuricemia and risk of stroke incidence and mortality because hyperuricemia is hypothesized to he a risk factor for stroke and other cardiovascular disease, but, to date, results from observational studies are conflicting. Methods. A systematic review and meta-analysis were conducted. Studies were identified by searching major electronic databases using the Medical Subject Headings and keywords without restriction in languages. Prospective cohort studies were included only if they contained data on stroke incidences or mortalities related to serum uric acid levels in adults. Pooled risk ratios (RRs) for the association of stroke incidence and mortality with serum uric acid levels were calculated. Results. A total of 16 studies including 238,449 adults were eligible and abstracted. Hyperuricemia was associated with a significantly higher risk of both stroke incidence (6 studies; RR 1.41, 95% confidence interval [95% CI] 1.05, 1.76) and mortality (6 studies; RR 1.36, 95% CI 1.03, 1.69) in our meta-analyses of unadjusted study estimates, Subgroup analyses of studies adjusting for known risk factors such as age, hypertension, diabetes mellitus, and cholesterol still showed that hyperuricemia was significantly associated with both stroke incidence (4 studies; RR 1.47, 95% CI 1.19, 1.76) and mortality (6 studies; RR 1.26, 95% CI 1.12, 1.39). The pooled estimate of multivariate RRs did not differ significantly by sex. Conclusion. Hyperuricemia may modestly increase the risks of both stroke incidence and mortality. Future research is needed to determine whether lowering uric acid level has any beneficial effects on stroke.
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