Correction
There was an error in one of the figures that appeared in the article, “A Randomized Double-Blind Study of Risperidone and Olanzapine in the Treatment of Schizophrenia or Schizoaffective Disorder, “ by Robert R. Conley, M.D., and Ramy Mahmoud, M.D., M.P.H. (Am J Psychiatry 2001; 158:765–774). The corrected figure should replace Figure 3 on page 771.