title: The Self-Efficacy Questionnaire for Depressed Adolescents: a measure to predict the course of depression in depressed youth.
abstract: OBJECTIVE
  Self-efficacy can be conceptualised as a person's perception of their own ability to produce a desired outcome. Low self-efficacy has been reported to be a mediating variable in developing depression. The Self-Efficacy Questionnaire for Depressed Adolescents (SEQ-DA) is a 12-item inventory, designed to measure self-perceived ability of the young person to cope with depressive symptoms. This paper presents further information on the psychometric properties of the SEQ-DA in a clinical sample of depressed adolescents.
  
  
  METHODS
  The SEQ-DA was administered to a clinical sample of 130 adolescents with a depressive disorder at baseline, at the end of 3 months of therapy and 6 months following therapy. A diagnosis of depression was made using the Schedule for Affective Disorders and Schizophrenia for School Aged Children. The ability of the SEQ-DA to identify those adolescents who had a diagnosis of major depressive disorder at baseline, following treatment and at 6-month follow-up was evaluated. Receiver operating characteristic (ROC) analysis of the SEQ-DA in this clinical sample of depressed adolescents was undertaken to establish cut-off scores of the SEQ-DA.
  
  
  RESULTS
  The SEQ-DA score at baseline of < 36 and following treatment of < 43 were predictive of a depressive disorder.
  
  
  CONCLUSIONS
  The SEQ-DA is a very simple self-report measure that can be used to predict which adolescents treated for depression are likely to remain depressed, thus prompting more intensive treatment and follow-up.
authors.affiliation: Centre for Developmental Psychiatry & Psychology, Monash University, Melbourne, Australia. Michael.Gordon@southernhealth.org.au
authors.forename: Michael S
authors.initials: MS
authors.lastname: Gordon
authors.forename: Bruce
authors.initials: B
authors.lastname: Tonge
authors.forename: Glenn A
authors.initials: GA
authors.lastname: Melvin
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D002648:Child; D003863:Depression / Q000175:diagnosis / Q000523:psychology*; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data; D012372:ROC Curve; D020377:Self Efficacy; D011795:Surveys and Questionnaires