The study examined 18,982 first offenders assigned to Driver Alcohol Education programs; 2,412 second offenders assigned to a 14-day residential program at Rutland State Hospital; and 2,440 DUIL offenders committed to county jails and correctional facilities. The information collected included age, sex, race, marital status, education, employment, arrest records, alcohol treatment, and previous alcohol and drug involvement. Both male and female repeat offenders resembled each other closely, as did first offender males and females. Compared to their first offender counterparts, repeat offenders drank more often, got drunk more often, abused drugs in proportionately greater numbers, and used more alcohol treatment services. They also had fewer economic resources and exhibited greater impairment as a result of their drinking. Although women constitute a relatively small percentage of DUIL arrestees, this proportion has increased rapidly in recent years. The findings suggest that intervention strategies must be sensitive to the needs of both sexes and capable of dealing with dual addictions. Tables, footnotes, and 12 references.