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A randomized controlled trial of a home and school-based intervention for selective mutism - defocused communication
Beate Oerbeck1, Murray B Stein2, Tore Wentzel-Larsen1,3
1Centre for Child and Adolescent Mental Health, Eastern and Southern Norway, PO box 4623 Nydalen, Oslo, N-0405, Norway.
Background:
Randomized controlled psychosocial treatment studies on selective mutism (SM) are lacking.
Method:
Overall, 24 children with SM, aged 3-9 years, were randomized to 3 months treatment (n = 12) or wait list (n = 12). Primary outcome measure was the School Speech Questionnaire.
Results:
A significant time by group interaction was found (p = .029) with significantly increased speech in the treatment group (p = .004) and no change in wait list controls (p = .936). A time by age interaction favoured younger children (p = .029). Clinical trail registration: Norwegian Research CouncilNCT01002196.
Conclusions:
The treatment significantly improved speech. Greater improvement in the younger age group highlights the importance of an early intervention.
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