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. 2013 Feb 20;8(2):e56864. doi: 10.1371/journal.pone.0056864

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© 2013 Lv et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fix-effects model analysis for the overall RR (1.56, 95% CI = 1.39–1.76) of incident type 2 diabetes for the highest compared with the lowest category of serum uric acid level. No evidence of heterogeneity across studies was found (I² = 0.0%, P = 0.571). The square sizes are proportional to the weight of each study in the meta-analysis; the horizontal lines represent 95% CIs; the diamond represents the overall RR with its 95% CI.