RT Journal Article T1 Economic evaluation of a guided and unguided internet-based CBT intervention for major depression: Results from a multi-center, three-armed randomized controlled trial conducted in primary care. A1 Romero-Sanchiz, Pablo A1 Nogueira-Arjona, Raquel A1 García-Ruiz, Antonio A1 Luciano, Juan V A1 García Campayo, Javier A1 Gili, Margalida A1 Botella, Cristina A1 Baños, Rosa A1 Castro, Adoración A1 López-Del-Hoyo, Yolanda A1 Pérez Ara, Mª Ángeles A1 Modrego-Alarcón, Marta A1 Mayoral Cleríes, Fermín K1 Adulto K1 Grupos control K1 Análisis costo-beneficio K1 Depresión K1 Trastorno depresivo K1 Femenino K1 Estudios de seguimiento K1 Hispanoamericanos K1 Humanos K1 Análisis de intención de tratar K1 Internet K1 Atención primaria de salud K1 Psicoterapia K1 Sonrisa K1 Sociedades científicas AB Depression is one of the most common mental disorders and will become one of the leading causes of disability in the world. Internet-based CBT programs for depression have been classified as "well established" following the American Psychological Association criteria for empirically supported treatments. The aim of this study is to analyze the cost effectiveness at 12-month follow-up of the Internet-based CBT program "Smiling is fun" with (LITG) and without psychotherapist support (TSG) compared to usual care. The perspective used in our analysis is societal. A sample of 296 depressed patients (mean age of 43.04 years; 76% female; BDI-II mean score = 22.37) from primary care services in four Spanish regions were randomized in the RCT. The complete case and intention-to-treat (ITT) perspectives were used for the analyses. The results demonstrated that both Internet-based CBT interventions exhibited cost utility and cost effectiveness compared with a control group. The complete case analyses revealed an incremental cost-effectiveness ratio (ICER) of €-169.50 and an incremental cost-utility ratio (ICUR) of €-11389.66 for the TSG group and an ICER of €-104.63 and an ICUR of €-6380.86 for the LITG group. The ITT analyses found an ICER of €-98.37 and an ICUR of €-5160.40 for the TSG group and an ICER of €-9.91 and an ICUR of €496.72 for the LITG group. In summary, the results of this study indicate that the two Internet-based CBT interventions are appropriate from both economic and clinical perspectives for depressed patients in the Spanish primary care system. These interventions not only help patients to improve clinically but also generate societal savings. PB Public Libray of Science YR 2017 FD 2017-02 LK http://hdl.handle.net/10668/2677 UL http://hdl.handle.net/10668/2677 LA en NO Romero-Sanchiz P, Nogueira-Arjona R, García-Ruiz A, Luciano JV, García Campayo J, Gili M, et al. Economic evaluation of a guided and unguided internet-based CBT intervention for major depression: Results from a multi-center, three-armed randomized controlled trial conducted in primary care. PLoS ONE. 2017; 12(2): e0172741. NO TRIAL REGISTRATION:clinicaltrials.gov NCT01611818. DS RISalud RD Apr 8, 2025