 This study aimed to use decision tree models to identify the variables associated with the treatment success of internet-based cognitive behavioral therapy, ICBT, fortonitis, and found that higher education level was the most influencing factor. The card and gradient boosting models were found to be the best predictive models, but their accuracy and specificity could be improved in future studies with larger sample sizes and a wider range of predictive factors. This article was authored by Hans-Apani Rodrigo, Eldra W. Buix, Gerhard Andersen, and others.