Revista chilena de neuro-psiquiatría
versión On-line ISSN 0717-9227
BAADER M, Tomas et al. Validity and utility of PHQ9 (Patient Helth Questionnaire) in the diagnosis of depression in user patients of primary care in Chile. Rev. chil. neuro-psiquiatr. [online]. 2012, vol.50, n.1, pp.10-22. ISSN 0717-9227. http://dx.doi.org/10.4067/S0717-92272012000100002.
Background: Depressive disorders (TD) is a set of prevalent diseases that require proper diagnosis and treatment. In Chile, the instruments of evaluation and diagnosis are scarce. As a way to address this difficulty, the objective of this study was to validate the Spanish version of the self-reported Patient Health Questionarie (PHQ-9), the consulting population in primary care in Chile. The PHQ-9 to detect depressive symptoms as mild, moderate or severe, and has proven to be an efficient diagnostic tool. Methods: 1327 patients evaluated in June 2005 from five urban general practices of the Commune of Valdivia answered individually the PHQ-9. A subsample was compared with the Hamilton scale for depression, ICD-10 criteria for depression and XX version of the PHQ-9. Results: The PHQ-9 demonstrated a sensitivity of 92% and 89% specificity in detecting depressive patients, when compared to the Hamilton-D scale. It presents a construct validity and predictive validity concurrent with the ICD-10 criteria for depression. Conclusions: The PHQ-9 showed a psychometric allowing clinical use in primary care patients in Chile.
Palabras clave : Depression; PHQ-9 questionnarie; validity in primary care.