Aims: To understand the efficacy of a mutual-help group activity for drug users and family members in terms of: (a) family members' behavioral changes (b) treatment engagement rate of the drug users, and (c) life satisfaction of family members.
Methods: A total of 186 family members answered questionnaires.
Results: Attending the group changed the family members' behaviors. The treatment engagement rates within 1, 6, and 12 months for untreated drug users were 23.2%, 39.2%, and 52.3%, respectively. The well-being (Subjective Well-Being Inventory [SUBI]) of long-term group members is higher than that of short-term group members.