Corrigendum to “A Multisite Trial of Mifepristone for the Treatment of Psychotic Depression: A Site-by-Treatment Interaction” [Contemp. Clin. Trials 30 (2009) 284-288]

The authors regret the typographical error in the penultimate sentence of the abstract. The sentence should read: “First, while statistical adjustments for site are common in multisite clinical trials, this study reminds trialists to formally evaluate the interaction of site by treatment.”