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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Arthritis Care Res (Hoboken). 2011 Sep;63(9):1295–1306. doi: 10.1002/acr.20519

Figure 2. Forest Plot of the Pooled Effect of Vitamin C Supplementation on Serum Uric Acid.

Figure 2

Net change in each individual study for serum uric acid in randomized controlled trials of vitamin C supplementation and overall pooled result. The area of each square is proportional to the study weight in the analysis. Horizontal lines represent 95% confidence intervals (CIs). The red diamond represents the pooled estimate and the 95% CI obtained from inverse-variance weighted random-effects models.