The goal of his study was to evaluate in 1,951 acute psychiatric inpatients the reliability, construct, convergent, and predictive validity of substance-induced psychiatric syndrome ratings made by clinical attending pschiatrists. The primary admitting condition for each subject was categorically rated by clinical attendings as not, mildly, moderately, or mostly substance-induced at both admission and discharge. Individual substance categories were associated with characteristic demographic, clinical treatment response, and length of stay, findings indicating good construct, predictive validity, and clinical utility. A linear dimensional approach to rating substance-induced syndromes in acute clinical populations may be preferable to the simple dichotomous approach used in DSM-IV.
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