Amanda Polaro1 ; Roberta M Machado1
From the Abstract: This formative research study focused on developing and validating a digital health educational intervention in accordance with the systematic instructional design model, encompassing the phases of analysis, design/development, and validation. A panel of 13 experts performed content validation using the Pasquali criteria. Interrater agreement was quantitatively assessed using the content validity index (CVI) for clarity and relevance, with a minimum acceptable agreement threshold of ≥0.80.
Results: The application includes 11 screens and integrates validated psychometric instruments for self-monitoring of key mental health conditions, including the Patient Health Questionnaire-9, the Generalized Anxiety Disorder-7, the modified Yale Food Addiction Scale 2.0, and the Alcohol Use Disorders Identification Test. In addition, the platform includes body weight monitoring, physical activity tracking, and access to educational content on healthy eating and mental health. The application incorporates motivational strategies such as goal setting, automated alerts, and encouragement of multidisciplinary follow-up.