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Arch Intern Med. 2007;167(5):444.

Error in Figure. In the Original Investigation by Rintelen et al titled "A Meta-analysis of Controlled Clinical Studies With Diacerein in the Treatment of Osteoarthritis" published in the September 25, 2006, issue of the ARCHIVES (2006;166:1899-1906), an error occurred in Figure 2 wherein the 4 randomized controlled trials excluded from the meta-analysis were incorrectly referenced. A corrected figure appears below.

View larger version (120K): [in this window] [in a new window] [as a PowerPoint slide]   Figure 2. Selection of trials for inclusion in the meta-analysis. RCTs indicates randomized controlled trials.