Telephone Support vs. Self-guidance in an Internet-based Self-administered Psychological Program to Address Depression

Depression is a first level problem that poses a challenge for Primary Care (PC). The overload of care in this area requires lower-cost and more accessible alternatives. Internet-based self-applied cognitive behavioral treatments (CBCT) have demonstrated their efficacy and added advantages. The "Smiling is fun" program has been validated in Spanish PC and has demonstrated its usefulness and cost-effectiveness. Previous studies have shown that professional support or guidance increases the results of the TCCI. The aim of the present study is to contrast, by means of a randomized controlled trial, aims to examine the effectiveness, adherence rates, and implementation process of Smiling is Fun to address depression in a PC setting considering the influence of telephone support vs no support. Ultimately, the results of the study could help in the uptake of sustainable resources so that the population could gain better access to psychological interventions in mental health services.