Cited by 126Meta-analysis and systematic reviewsPsychotherapy Techniques and ApplicationsPsychology Research and Bibliometrics

Using Dissertations to Examine Potential Bias in Child and Adolescent Clinical Trials.

McLeod, Bryce D., Weisz, John R.·2004·Journal of Consulting and Clinical Psychology

Abstract

The major youth psychotherapy meta-analyses have relied on published studies, which may have led to biased effect size estimates. To examine this possibility, the authors compared 121 dissertations with 134 published studies and found the following: (a) few differences on individual methodological variables, but, overall, stronger methodology in dissertations; (b) no differences in the steps taken to ensure treatment integrity; and (c) a mean dissertation effect size less than half that of published studies. The effect size difference remained robust across tests controlling for all reliable method differences. The findings suggest that dissertations are so strong, both methodologically and clinically, that they warrant inclusion in child psychotherapy meta-analyses and that previous meta-analyses, by excluding them, may have overestimated treatment effects.

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Crossref · 10.1037/0022-006x.72.2.235

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Authors
McLeod, B. D., & Weisz, J. R.
Affiliations
University of California, Los Angeles (US)
Venue
Journal of Consulting and Clinical Psychology
Published
2004
Volume
72
Issue
2
Pages
235-251
ISSN
  • 0022-006X (ISSN-L)
  • 1939-2117
OpenAlex
W2113339390
Cited by
125
References
291
Citations by year
2026: 1 · 2025: 1 · 2024: 9 · 2023: 3 · 2022: 7 · 2021: 9 · 2020: 4 · 2019: 6 · 2018: 7 · 2017: 2 · 2016: 5 · 2015: 5 · 2014: 6 · 2013: 14 · 2012: 4
FWCI
1.27
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Consulting and Clinical Psychology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5k05mh001161-05, 5r01mh049522-06)
  • National Institute of Mental Health (R01 MH 49522, F31MH064993, K05-MH01161, F31-MH64993-01)
Topics
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
  • Social Sciences › Psychology › Clinical Psychology › Psychotherapy Techniques and Applications
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Psychology Research and Bibliometrics
Keywords
dissertations, child psychotherapy, adolescent psychotherapy, clinical trials, publication bias, effect size overestimation, meta-analysis, implementation fidelity, methodological quality, unpublished research
MeSH terms
Adolescent, Child, Clinical Trials as Topic, Academic Dissertations as Topic, Humans, Bias

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