Primary Care Internet Based Depression Prevention for Adolescents (CATCH-IT) Also Known as Promoting AdolescenT Health

Additional aims and hypothesis are provided below: -Aim 1: To determine whether the CATCH-IT depression prevention intervention prevents or delays major depressive episodes, as well as non-affective disorder episodes, compared to HEALTH EDUCATION. Hypothesis 1: Compared to youth in the HEALTH EDUCATION condition, youth assigned to CATCH-IT will have a lower hazard ratio of major depressive episodes and non-affective disorder episodes over 2 years. -Aim 2: To determine if participants in the CATCH-IT group exhibit more rapid favorable changes of depressive symptoms/and or vulnerability/protective factors compared to the HEALTH EDUCATION group. Hypothesis 2: Compared to youth in the HEALTH EDUCATION condition, youth in the CATCH-IT program will demonstrate a steeper slope of improved symptoms and fewer depressed days over 2 years. -Aim 3: To determine if participants in the CATCH-IT program report lower perceived educational impairment, greater quality of life, greater health-related quality of life, and lower incidence of other mental disorders (anxiety, substance/alcohol use) as compared to participants in HEALTH EDUCATION. Hypothesis 3: Compared to youth in the HEALTH EDUCATION group, youth in the CATCH-IT program will demonstrate more rapid benefits in reduced educational impairment, improved quality of life, and fewer disorders over 2 years. -Aim 4: To determine for whom (moderators)among 13-18 year old (inclusive) and how (mediators) the CATCH-IT program works. Hypothesis 4.1: CATCH-IT effects will be moderated by six domains: (1) demographic/cultural factors, (2) vulnerability factors/adverse events,(3) motivation,(4) physician relationship, (5) parent/child co-morbid psychopathology, and (6) treatment. Hypothesis 4.2: The relation between CATCH-IT participation and reduction in depressive episodes will be mediated by adherence to the Internet, motivational interview fidelity as they alter vulnerability factors (e.g. motivation, cognition and social support) and responses to adverse events, which in turn impact the likelihood of episodes. Exploratory Aim 1: To determine the implementation feasibility of the intervention from the physician/nurse practitioner and office nurse/medical assistant perspective as well as to describe the practices in relationship to the medical home model. Exploratory Aim 2: To determine whether CATCH-IT has a favorable cost-benefit ratio and/or cost effectiveness of \<$50,000/disability adjusted life year compared to the HEALTH EDUCATION group.