Hypnotic treatment of smoking: the single-treatment method revisited.

The authors replicated Spiegel's single-treatment method by treating 40 self-referred patients in a one-hour hypnosis session for smoking. Their results, a 6-month total abstinence rate of about 25%, were comparable with Spiegel's experience. They recommend future studies that include nontreatment control groups to validate the effects of the hypnotic treatment method of smoking.