A smaller than expected percentage of offenders, all of whom reported a SUD, received non-Court ordered treatment. About 26% of study participants reported having received any substance abuse or mental health treatment services in Time 2 of follow-up, encompassing 10 years. In comparison, among those surveyed in the National Comorbidity Survey, who reported a current alcohol use disorder, 14.5% (standard error 3.03) had received some form of services, including self-help groups, for their problems in the past year.38 The National Comorbidity Survey is a nationally representative sample of adults living in the United States that used the same diagnostic instrument as our study. Among those with an alcohol use plus any other comorbid disorder such as other SUD, 32.2% had received such services in the past year. Data from the National Household Survey on Drug Abuse reveal that only 4% of those who report substance abuse problems received treatment service in the previous year.39 We did not determine the total number of years subjects in this study continued to meet criteria for SUDs, nor did we ascertain how many 12-step
