Measurement
PHQ-A: Patient Health Questionnaire-9 modified for Adolescents
Reference and/or access link:
Johnson, J. G., Harris, E. S., Spitzer, R. L., & Williams, J. B. (2002). The patient health questionnaire for adolescents: validation of an instrument for the assessment of mental disorders among adolescent primary care patients. Journal of Adolescent Health, 30(3), 196-204.