The group on Prozac did slightly better than the placebo group, but barely so. This is typical of most studies of drugs for PTSD: Simply showing up brings about a 30 percent to 42 percent improvement; when drugs work, they add an additional 5 percent to 15 percent. However, the patients on EMDR did substantially better than those on either Prozac or the placebo: After eight EMDR sessions one in four were completely cured (their PTSD scores had dropped to negligible levels), compared with one in ten of the Prozac group. But the real difference occurred over time: When we interviewed our
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