• Kerrie Shandley, David William Austin, Britt Klein, Ciaran Pier, Peter Schattner, David Pierce, and Victoria Wade.
• Swinburne University of Technology, Faculty of Life and Social Sciences, Mail H31, PO Box 218, Hawthorn, Victoria 3122, Australia. kshandley@swin.edu.au
• J. Med. Internet Res. 2008 May 19; 10 (2): e14.

BackgroundMental illness is an escalating concern worldwide. The management of disorders such as anxiety and depression largely falls to family doctors or general practitioners (GPs). However, GPs are often too time constrained and may lack the necessary training to adequately manage the needs of such patients. Evidence-based Internet interventions represent a potentially valuable resource to reduce the burden of care and the cost of managing mental health disorders within primary care settings and, at the same time, improve patient outcomes.ObjectiveThe present study sought to extend the efficacy of a therapist-assisted Internet treatment program for panic disorder, Panic Online, by determining whether comparable outcomes could be achieved and maintained when Panic Online was supported by either GPs or psychologists.MethodsVia a natural groups design, 96 people with a primary diagnosis of panic disorder (with or without agoraphobia) completed the Panic Online program over 12 weeks with the therapeutic assistance of their GP (n = 53), who had received specialist training in cognitive behavioral therapy, or a clinical psychologist (n = 43). Participants completed a clinical diagnostic telephone interview, conducted by a psychologist, and a set of online questionnaires to assess panic-related symptoms at three time periods (pretreatment, posttreatment, and 6 month follow-up).ResultsBoth treatments led to clinically significant improvements on measures of panic and panic-related symptomatology from pretreatment to posttreatment. Both groups were shown to significantly improve over time. Improvements for both groups were maintained at follow-up; however, the groups did differ significantly on two quality of life domains: physical (F(1,82) = 9.13, P = .00) and environmental (F(1,82) = 4.41, P = .04). The attrition rate was significantly higher among those being treated by their GP (chi(2) (1) = 4.40, P = .02, N = 96).ConclusionsThis study provides evidence that Internet-based interventions are an effective adjunct to existing mental health care systems. Consequently, this may facilitate and enhance the delivery of evidence-based mental health treatments to increasingly large segments of the population via primary care systems and through suitably trained health professionals.

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