To facilitate comparability between the data obtained in the NESARC and the KECA, treatment seeking was defined as any AUD or mental health treatment in the past 12 months from a wide range of providers. Specifically, in the United States treatment seeking referred to going somewhere or seeing someone to get help or obtain services for SUD or other mental health problems, whereas in Korea, this question assessed any service use in the 12 months prior to the interview (World Health Organization, 1997).
