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Meta-Analysis
. 2006 Jun;37(2):99-111.
doi: 10.1016/j.beth.2005.05.002. Epub 2006 Mar 24.

A meta-analytic study of self-help interventions for anxiety problems

Michiyo Hirai  1 , George A Clum
Affiliations
Meta-Analysis

A meta-analytic study of self-help interventions for anxiety problems

Michiyo Hirai et al. Behav Ther. 2006 Jun.

Abstract

The present study examined the effectiveness of self-help (SH) interventions for individuals with anxiety problems. Thirty-three studies, targeting a variety of anxiety disorders and problems, met criteria for inclusion with 1,582 clinical and subclinical participants. Self-help formats included books, audio/videotapes, and computer/Internet-based programs. The average effect sizes (Cohen's ds) comparing SH interventions to control groups for target symptoms were .62 at posttreatment and .51 at follow-up. When compared to therapist-directed interventions (TDIs), the average effect sizes (Cohen's ds) for target problems were -.42 at posttreatment and -.36 at follow-up. Format of SH materials, type of target disorder, presence of minimal therapist contact, and other study parameters were examined for their effect on treatment outcome. The results were discussed from the perspective of a stepped-care approach for anxiety problems.

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