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Psychol Med. 2012 Oct;42(10):2193-203. doi: 10.1017/S0033291712000244. Epub 2012 Feb 21.

Internet-based cognitive behaviour therapy for obsessive-compulsive disorder: a randomized controlled trial.

Author information

1
Department of Clinical Neuroscience, Division of Psychiatry, Karolinska Institutet, Stockholm, Sweden. erik.m.andersson@ki.se

Abstract

BACKGROUND:

Cognitive behaviour therapy (CBT) is an effective treatment for obsessive-compulsive disorder (OCD) but access to CBT is limited. Internet-based CBT (ICBT) with therapist support is potentially a more accessible treatment. There are no randomized controlled trials testing ICBT for OCD. The aim of this study was to investigate the efficacy of ICBT for OCD in a randomized controlled trial.

METHOD:

Participants (n=101) diagnosed with OCD were randomized to either 10 weeks of ICBT or to an attention control condition, consisting of online supportive therapy. The primary outcome measure was the Yale-Brown Obsessive Compulsive Scale (YBOCS) administered by blinded assessors.

RESULTS:

Both treatments lead to significant improvements in OCD symptoms, but ICBT resulted in larger improvements than the control condition on the YBOCS, with a significant between-group effect size (Cohen's d) of 1.12 (95% CI 0.69-1.53) at post-treatment. The proportion of participants showing clinically significant improvement was 60% (95% CI 46-72) in the ICBT group compared to 6% (95% CI 1-17) in the control condition. The results were sustained at follow-up.

CONCLUSIONS:

ICBT is an efficacious treatment for OCD that could substantially increase access to CBT for OCD patients. Replication studies are warranted.

PMID:
22348650
PMCID:
PMC3435873
DOI:
10.1017/S0033291712000244
[Indexed for MEDLINE]
Free PMC Article

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