@Article{info:doi/10.2196/jmir.1657, author="van Bastelaar, Kim MP and Pouwer, Fran{\c{c}}ois and Cuijpers, Pim and Riper, Heleen and Twisk, Jos WR and Snoek, Frank J", title="Is a Severe Clinical Profile an Effect Modifier in a Web-Based Depression Treatment for Adults With Type 1 or Type 2 Diabetes? Secondary Analyses From a Randomized Controlled Trial", journal="J Med Internet Res", year="2012", month="Jan", day="05", volume="14", number="1", pages="e2", keywords="Diabetes mellitus, type 1; diabetes mellitus, type 2; depression; behavior therapy; cognitive therapy; depressive disorder; adults; psychology", abstract="Background: Depression and diabetes are two highly prevalent and co-occurring health problems. Web-based, diabetes-specific cognitive behavioral therapy (CBT) depression treatment is effective in diabetes patients, and has the potential to be cost effective and to have large reach. A remaining question is whether the effectiveness differs between patients with seriously impaired mental health and patients with less severe mental health problems. Objective: To test whether the effectiveness of an eight-lesson Web-based, diabetes-specific CBT for depression, with minimal therapist support, differs in patients with or without diagnosed major depressive disorder (MDD), diagnosed anxiety disorder, or elevated diabetes-specific emotional distress (DM-distress). Methods: We used data of 255 patients with diabetes with elevated depression scores, who were recruited via an open access website for participation in a randomized controlled trial, conducted in 2008--2009, comparing a diabetes-specific, Web-based, therapist-supported CBT with a 12-week waiting-list control group. We performed secondary analyses on these data to study whether MDD or anxiety disorder (measured using a telephone-administered diagnostic interview) and elevated DM-distress (online self-reported) are effect modifiers in the treatment of depressive symptoms (online self-reported) with Web-based diabetes-specific CBT. Results: MDD, anxiety disorder, and elevated DM-distress were not significant effect modifiers in the treatment of self-assessed depressive symptoms with Web-based diabetes-specific CBT. Conclusions: This Web-based diabetes-specific CBT depression treatment is suitable for use in patients with severe mental health problems and those with a less severe clinical profile. ClinicalTrial: International Standard Randomized Controlled Trial Number (ISRCTN): 24874457; http://www.controlled-trials.com/ISRCTN24874457 (Archived by WebCite at http://www.webcitation.org/63hwdviYr) ", issn="1438-8871", doi="10.2196/jmir.1657", url="http://www.jmir.org/2012/1/e2/", url="https://doi.org/10.2196/jmir.1657", url="http://www.ncbi.nlm.nih.gov/pubmed/22262728" }