The effectiveness of treatment for substance abuse disorders varies for each individual, but evaluations of treatment efforts have shown positive outcomes. Long-term studies have found that the majority of substance-dependent patients eventually stop compulsive use and have less frequent and severe relapse episodes. Individuals who remain in treatment for longer periods of time are more likely to achieve maximum benefits. Treatment for substance abuse disorders includes a combination of medical, psychological, and sociocultural approaches, tailored to the individual's needs.