severity) for stimulant-induced psychosis found previously by our group in the U.S. with the English version (Kalayasiri et al., 2005; Kalayasiri, Mutirangura, Verachai, Gelernter, & Malison, 2009). While the diagnostic concordance between the SSADDA and the MINI in our study supports the concurrent validity of the SSADDA, we note that other approaches to the assessment of concurrent validity were not conducted (e.g., other structured interviews, such as the Structured Clinical Interview for DSM-IV or SCID, and/or clinical interview by a primary psychiatrist). In addition, other forms of validity (e.g., discriminant, construct) were not assessed in the current study and are required to support more fully the validity of the diagnosis obtained with the SSADDA. Finally, the current study does not address the instruments’ diagnostic reliability in establishing OD in primary psychiatric populations, where dually diagnosed individuals might present additional challenges (e.g., intermediate or more variable trait severity and/or overlapping symptoms from multiple disorders).
