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KMID : 1036820140190030381
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Communication Sciences & Disorders
2014 Volume.19 No. 3 p.381 ~ p.390
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Meta-Analysis of Single-Subject Design Studies in Stuttering Treatment
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Lee Kyung-Jae
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Abstract
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Objectives: A systematic review or meta-analysis provides the highest level of evidence that clinicians can use in evidence based practice. Meta-analyses on stuttering treatment studies with group designs show that stuttering treatment is effective in general. However even though single subject design studies have advantages of showing individualized change patterns, there has been little research on meta-analysis on such single subject design studies. The purpose of the current study is, therefore, to conduct meta-analysis on recent single-subject studies on stuttering treatment, and discuss overall stuttering treatment effectiveness.
Methods: The current study identified single subject studies which have been published in domestic and international academic journals in the past 20 years. A total of 13 studies were identified and analyzed in the meta-analysis. The effect size on fluency gain was determined using random effects models.
Results: In general stuttering treatment was effective in enhancing the fluency of the participants. Integrated strategies and fluency shaping strategies showed relatively greater effect sizes while cognitive approaches and other approaches showed relatively smaller effect sizes.
Conclusion: The results showed stuttering treatment was effective in helping participants to be more fluent. Though not a direct comparison, there was a difference in the treatment effectiveness across various treatment approaches, and clinicians may make informed clinical decisions based on these results.
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KEYWORD
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Stuttering, Single subject designs, Fluency, Meta-analysis
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