Relationship between problem gambling and substance use in a methadone maintenance population.

Few studies have examined the relationship between pathological gambling and substance abuse treatment outcome. This study assessed the gambling behavior of 62 patients enrolled in a methadone maintenance treatment program. Eleven (17.7%) met current SOGS criteria for probable pathological gambling. Patients with and without probable pathological gambling were compared on substance abuse treatment outcome measures including urine toxicology results for heroin and cocaine use, and clinic dropout. Results indicated that those who were probable pathological gamblers were more likely to use cocaine through therapy, and more likely to drop out of the clinic treatment program than nonpathological gamblers. Implications for substance abuse treatment are discussed.