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      Validación en Colombia del instrumento para evaluación de la depresión Montgomery-Åsberg Depression Rating Scale (MADRS) Translated title: Validation of the Montgomery-Åsberg Depression Rating Scale (MADRS) in Colombia

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          Abstract

          Objetivo: Adaptar y validar la Montgomery-Åsberg Depression Rating Scale (MADRS) en el medio colombiano. Metodología: Estudio de tipo observacional para la validación de una escala. Se precisó la validez de criterio determinando los puntos de corte del instrumento a través de los valores de sensibilidad y especificidad de la gravedad de la enfermedad, al contrastarla con los criterios de la Clasificación Internacional de Enfermedades (CIE-10). Se realizó un análisis factorial de la escala; se determinó la consistencia interna del instrumento; se evaluó la reproducibilidad interevaluadores a través de la evaluación de 22 pacientes por cuatro investigadores diferentes, y se estableció la sensibilidad al cambio de la escala en 28 sujetos aplicando el instrumento tras un lapso de 14-28 días. Resultados: El estudio se llevó a cabo en la ciudad de Bogotá, donde se aplicó a 150 pacientes con diagnóstico de depresión mayor. El punto de corte para depresión moderada fue 20 (sensibilidad, 98%; especificidad, 96%) y para grave, 34 (sensibilidad, 98%; especificidad, 92%). Se evidenció que el instrumento es unidimensional y posee buena consistencia interna (α = 0,9168). Los hallazgos de las pruebas de confiabilidad interevaluadores demostraron que el instrumento es altamente confiable (coeficiente de correlación intraclase = 0,9833). El instrumento tiene buena sensibilidad al cambio. Conclusiones: La versión colombiana de la escala de evaluación de la depresión Montgomery-Åsberg tiene buenas propiedades psicométricas y se puede utilizar en la práctica clínica y en investigaciones relacionadas con el trastorno depresivo.

          Translated abstract

          Objective: To adapt and to validate the Montgomery-Åsberg Depression Rating Scale (MADRS) in Colombia. Methods: Observational study for scale validation. Validity criteria were used to determine the severity cut-off points of the tool. Taking into account sensitivity and specificity values, those cut points were contrasted with ICD-10 criteria for depression severity. A factor analysis was performed. The internal consistency was determined with the same sample of patients used for the validity criteria. Inter-rater reliability was assessed by evaluating the 22 records of the patients that consented to a video interview. Sensitivity to change was established through a second application of the scale in 28 subjects after a lapse of 14 to 28 days. Results: The study was performed in Bogotá, the tool was applied in 150 patients suffering from major depressive disorder. The cut-off point for moderate depression was 20 (sensitivity, 98%; specificity, 96%), and the cut-off point for severe depression was 34 (sensitivity, 98%; specificity, 92%). The tool appears as a unidimensional scale, which possesses a good internal consistency with (α = .9168). The findings of inter-rater reliability evaluation showed the scale as highly reliable (intraclass correlation coefficient=.9833). The instrument has a good sensitivity to change. Conclusions: The Colombian version of the Montgomery-Åsberg Depression Rating Scale has good psychometric properties and can be used in clinical practice and in clinical research in the field of depressive disorder.

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          Most cited references34

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          Grade scores of the Montgomery-Asberg Depression and the Clinical Anxiety Scales.

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            A checklist for evaluating the usefulness of rating scales.

            D Streiner (1993)
            Rating scales of various sorts are very useful for both clinical and research purposes. However, they vary greatly regarding their reliability, validity, and utility. This article provides a guide for people who need to evaluate scales, either to incorporate them into their own research or clinical activities, or to determine if the results of studies which use scales are meaningful. The different types of reliability and validity are discussed and guidelines are offered to evaluate how well these were assessed. Finally, other aspects of scales which can affect their usefulness, such as completion time, training, and scoring ease, are discussed.
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              Measuring depression: comparison and integration of three scales in the GENDEP study.

              A number of scales are used to estimate the severity of depression. However, differences between self-report and clinician rating, multi-dimensionality and different weighting of individual symptoms in summed scores may affect the validity of measurement. In this study we examined and integrated the psychometric properties of three commonly used rating scales. The 17-item Hamilton Depression Rating Scale (HAMD-17), the Montgomery-Asberg Depression Rating Scale (MADRS) and the Beck Depression Inventory (BDI) were administered to 660 adult patients with unipolar depression in a multi-centre pharmacogenetic study. Item response theory (IRT) and factor analysis were used to evaluate their psychometric properties and estimate true depression severity, as well as to group items and derive factor scores. The MADRS and the BDI provide internally consistent but mutually distinct estimates of depression severity. The HAMD-17 is not internally consistent and contains several items less suitable for out-patients. Factor analyses indicated a dominant depression factor. A model comprising three dimensions, namely 'observed mood and anxiety', 'cognitive' and 'neurovegetative', provided a more detailed description of depression severity. The MADRS and the BDI can be recommended as complementary measures of depression severity. The three factor scores are proposed for external validation.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rcp
                Revista Colombiana de Psiquiatría
                rev.colomb.psiquiatr.
                Asociacion Colombiana de Psiquiatria. (Bogotá, Distrito Capital, Colombia )
                0034-7450
                July 2016
                : 45
                : 3
                : 146-155
                Affiliations
                [02] Bogotá orgnamePontificia Universidad Javeriana orgdiv1Departamento de Epidemiología Clínica y Bioestadística Colombia
                [01] Bogotá orgnameCentro de Investigaciones del Sistema Nervioso Colombia
                Article
                S0034-74502016000300002
                10.1016/j.rcp.2015.08.0060034-7450
                7c7444b0-d529-4cb3-a722-952e3fe1800c

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 27 February 2015
                : 24 August 2015
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 35, Pages: 10
                Product

                SciELO Colombia


                Depression,Colombia,Validation studies,Estudios de validación,Depresión

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