In addition to the Thai SSADDA, the current study employed a previously translated and validated Thai language version of the Mini-International Neuropsychiatric Interview (Thai MINI) as a secondary phenotypic assessment (Kittirattanapaiboon & Khamwongpin, 2005). The Thai MINI was modified for the current study to assess lifetime (rather than current) neuropsychiatric disorders, including substance dependence, since lifetime (trait) rather than current (state) diagnoses are of the most importance for studies of genetic vulnerability. All sections of the Thai MINI were used, although we report here only on data pertaining to the evaluation of OD.
