Original source: http://www.ncbi.nlm.nih.gov/PubMed/20399343?dopt=Abstract
A new scale for assessing the quality of randomized clinical trials of psychotherapy.
Compr Psychiatry. 2010 May-Jun;51(3):319-24
Authors: Kocsis JH, Gerber AJ, Milrod B, Roose SP, Barber J, Thase ME, Perkins P, Leon AC
CONTEXT: In 2004, the American Psychiatric Association’s Committee on Research on Psychiatric Treatments appointed a subcommittee to investigate the status of empirical evidence with regard to psychodynamic psychotherapy.
OBJECTIVE: As a part of this effort, the committee developed a rating scale designed to assess the quality of randomized controlled trials (RCTs) of psychotherapy.
DATA SOURCES: A 25-item RCT of Psychotherapy Quality Rating Scale was generated by expert consensus. Interrater reliability, internal consistency, and validity testing were undertaken using 7 trained raters.
STUDY SELECTION: A PubMed search was conducted to locate all RCTs of psychotherapies identified by their authors as being “psychodynamic” or “psychoanalytic” in origin and implementation.
DATA EXTRACTION: A total of 69 RCTs were independently rated by 2 raters.
DATA SYNTHESIS: The scale was found to have good interrater reliability (total score intraclass correlation = 0.76), internal consistency (Cronbach alpha = .87), and external validity.
CONCLUSIONS: This scale establishes a new standard for the design and execution of psychotherapy RCTs and provides a systematic empirical method for evaluating the quality of published RCTs.
PMID: 20399343 [PubMed – indexed for MEDLINE]