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A. Thomas McLellan, PhD; George Woody, MD
Drug Dependence Treatment Unit Veterans Administration Medical Center University and Woodland avenues Philadelphia, PA 19104 Lester Luborsky, PhD Department of Psychiatry 207 Piersol Bldg, G1 Hospital of the University of Pennsylvania 36th and Spruce streets Philadelphia, PA 19104

Arch Gen Psychiatry. 1987;44(2):195-196.

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In Reply.—

We thank Dr Murphy for his careful reading of our report, in which we described differences among therapists in the outcomes of their caseloads. These differences were based on a study in which patients were randomly assigned to welltrained therapists who performed manual guided therapy. Dr Murphy has raised technical issues about data analytic strategy that have been debated by statisticians for years. This debate is necessary and underscores the need for multiple forms of analysis and, of course, replication. Regarding the subjects and selection, there are several subsets based on available data. The total sample was 110 subjects, randomly assigned to the three treatment conditions, who stayed in treatment a minimum of three sessions and were located for seven-month follow-up. The data in Table 1 refer to the randomly assigned caseloads of three therapists from each group with the largest caseloads (as stated on page 603). Therapists with caseloads . . . [Full Text PDF of this Article]

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