An Internet administered treatment program for obsessive-compulsive disorder: A feasibility study

► We evaluate the efficacy of an Internet-administered treatment program for OCD. ► Eighty-one percent of participants completed the lessons within the 8 week program. ► Participants improved significantly on the primary outcome measures. ► Participants rated the procedure as highly acceptable. ► Only 86 min of telephone contact with the therapist was required over 8 weeks.