Increased rates of smoking initiation and smoking-related illness among women have narrowed the gender gap in smoking behavior. Past studies of performance by gender in prevention and treatment programs have reported reduced success with women and have suggested a need for stronger interventions having greater effects on both genders' smoking cessation. A field study of 93 male and 93 female CMHC outpatients examined the facilitation of smoking cessation by combining hypnosis and aversion treatments. After the 2-wk. program, 92% or 86 of the men and 90% or 84 of the women reported abstinence, and at 3-mo. follow-up, 86% or 80 of the men and 87% or 81 of the women reported continued abstinence. Although this field study in a clinical setting lacked rigorous measurement and experimental controls, the program suggested greater efficacy of smoking cessation by both sexes for combined hypnosis and aversion techniques.