Tamizaje de episodio depresivo en adolescentes. Validación del instrumento PHQ-9

• Autores: Francesca Borghero, Vania Martínez, Pedro Zitko M., Paul Vöringer, Gabriel Cavada, María Graciela Rojas C.
• Localización: Revista Médica de Chile, ISSN-e 0034-9887, Vol. 146, Nº. 4, 2018, págs. 479-486
• Idioma: español
• Títulos paralelos:
  • Screening depressive episodes in adolescents. Validation of the Patient Health Questionnaire-9 (PHQ-9)
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• Dialnet Métricas: 9 Citas
• Resumen

  • Background: There is a paucity of validated instruments for screening depression in adolescent populations in Chile. Aim: To determine the diagnostic accuracy of the adolescent version of Patient Health Questionnaire-9 (PHQ-9). Material and Methods: The PHQ-9 was transculturally adapted and administered to adolescents aged 15 to 19 years residing in Santiago de Chile, who were then evaluated with a semi structured interview (Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version or K-SADS-PL) and the Beck Depression Inventory. Internal validity, concurrent validity, and discriminatory power of the PHQ-9 were analyzed. Results: We evaluated 245 adolescents aged 16.2 ± 1 years (71% females). Two hundred and ten presented with a depressive episode and 35 were healthy. The sensitivity and specificity of the scale were 86.2 and 82.9% for 11 points, with a positive likelihood ratio of 5.02. Conclusions: The PHQ-9 is sensitive and specific enough to be used as a screening tool in adolescents with suspected depression. At a 11-point cut-off score as proposed, the likelihood to find a positive result in a subject with depression is five times higher.