Error in Figure. In the Original Article titled"Effects of Perceived Treatment on Quality of Life and Medical Outcomes ina Double-blind Placebo Surgery Trial" published in the April issue of theARCHIVES (2004;61:412-420), an incorrect version of Figure 3 was published. Figure 3 is published correctly here. Onlineversions of this article on the Archives of General Psychiatry Website were corrected on April 13, 2004. The ARCHIVES regrets the error.