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- Title
How many treatment sessions and patients are needed to create a stable score of adherence and competence in the treatment of cocaine dependence?
- Authors
Dennhag, Inga; Gibbons, Mary Beth Connolly; Barber, Jacques P; Gallop, Robert; Crits-Christoph, Paul
- Abstract
The study utilized a generalizability theory analysis of adherence and competence ratings to evaluate the number of sessions and patients needed to yield dependable scores at the patient and therapist levels. Independent judges' ratings of supportive expressive therapy (n = 94), cognitive therapy (n = 103), and individual drug counseling (n = 98) were obtained on tapes of sessions from the NIDA Collaborative Cocaine Treatment Study. Generalizability coefficients revealed that, for all three treatments, ratings made on approximately five to 10 sessions per patient are needed to achieve sufficient dependability at the patient level. At the therapist level, four to 14 patients need to be evaluated (depending on the modality), to yield dependable scores. Many studies today use fewer numbers.
- Publication
Psychotherapy research : journal of the Society for Psychotherapy Research, 2012, Vol 22, Issue 4, p475
- ISSN
1468-4381
- Publication type
Journal Article
- DOI
10.1080/10503307.2012.674790