title: A psychometric analysis of the dimension rating system--2nd edition.
abstract: Results from a two-year beta test, in a strong version of a Minnesota Model program, showed differences (p < .001) in all six ASAM dimensions rated for level II.1 and III.7 admissions by the DRS-2. Inter-rater reliability was .913, and intra-class correlations in year one admissions to level III.7 (r = .576 and .720, n = 578) and level II.1 (r = .462 and .632, n = 323) were comparable to internal consistency reported in year two. Inter-class correlations for both admission and discharge ratings occurred as predicted by the measurement design, and little evidence of rater drift for mean dimension scores or rater reliability was found. It was concluded that the DRS-2 is a reliable and valid method for rating impediments to treatment progress that is consistent with the structure and intent of the PPC-2. Limitations to the generalizability of these findings and ramifications for the PPC-2R are discussed.
authors.affiliation: Behaviorally Anchored Rating Systems LLC, PO Box 991, Charles Town, WV 25414, USA.
authors.forename: William W
authors.initials: WW
authors.lastname: May
mesh_terms: D000328:Adult; D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D008297:Male; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D019966:Substance-Related Disorders / Q000145:classification* / Q000175:diagnosis*