Title: Effect size calculations for the clinician: methods and comparability
year: 2014
Journal: Psychother Res
Volume: 24
Issue: 4
Pages: 470-84
Epubdate: 06/11/2013
Alternate Journal: Psychotherapy research : journal of the Society for Psychotherapy Research
ISSN: 1050-3307
DOI: 10.1080/10503307.2013.840812
Accession Number: 24188906
Abstract: OBJECTIVE: The measurement of clinical change via single-group pre-post effect size has become increasingly common in psychotherapy settings that collect practice-based evidence and engage in feedback-informed treatment. Different methods of calculating effect size for the same sample of clients and the same measure can lead to wide-ranging results, reducing interpretability. METHOD: Effect sizes from therapists-including those drawn from a large web-based database of practicing clinicians-were calculated using nine different methods. RESULTS: The resulting effect sizes varied significantly depending on the method employed. Differences between measurement methods routinely exceeded 0.40 for individual therapists. CONCLUSIONS: Three methods for calculating effect sizes are recommended for moderating these differences, including two equations that show promise as valid and practical methods for use by clinicians in professional practice.
Notes: 1468-4381
Seidel, Jason A
Miller, Scott D
Chow, Daryl L
Journal Article
Psychother Res. 2014
24(4):470-84. doi: 10.1080/10503307.2013.840812. Epub 2013 Nov 5.
URI: https://open-access.imh.com.sg/handle/123456789/4740
Authors Address: a Colorado Center for Clinical Excellence , Denver , CO , USA.
Translated author: NLM
Translated title: eng
Appears in Collections:2014

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