Joan Trujols1, Javier de Diego-Adeliño2, Albert Feliu-Soler2, Ioseba Iraurgi3, Dolors Puigdemont2, Enric Alvarez4, Víctor Pérez5, Maria J Portella2. 1. Servei de Psiquiatria, Hospital de la Santa Creu i Sant Pau, Institut d׳Investigació Biomèdica Sant Pau (IIB Sant Pau), Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Sant Antoni Maria Claret 167, 08025 Barcelona, Spain. Electronic address: jtrujols@santpau.cat. 2. Servei de Psiquiatria, Hospital de la Santa Creu i Sant Pau, Institut d׳Investigació Biomèdica Sant Pau (IIB Sant Pau), Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Sant Antoni Maria Claret 167, 08025 Barcelona, Spain. 3. DeustoPsych - Unidad de Investigación, Desarrollo e Innovación en Psicología y Salud, Universidad de Deusto, Bilbao, Spain. 4. Servei de Psiquiatria, Hospital de la Santa Creu i Sant Pau, Institut d׳Investigació Biomèdica Sant Pau (IIB Sant Pau), Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Sant Antoni Maria Claret 167, 08025 Barcelona, Spain; Departament de Psiquiatria i Medicina Legal, Facultat de Medicina, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain. 5. Departament de Psiquiatria i Medicina Legal, Facultat de Medicina, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain; Institut de Neuropsiquiatria i Addiccions, Parc de Salut Mar, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain.
Abstract
BACKGROUND: Psychometrically robust and easy-to-administer scales for depressive symptoms are necessary for research and clinical assessment. This is a psychometric study of the Spanish version of the Quick Inventory of Depressive Symptomatology-Self-Report (QIDS-SR16) in a clinical sample. METHOD: One-hundred and seventy-three patients (65% women) with a psychiatric disorder including depressive symptoms were recruited. Such symptoms were assessed by means of the QIDS-SR16 and two interviewer-rated instruments: the 17-item Hamilton Depression Rating Scale (HDRS17) and the Clinical Global Impression-Severity (CGI-S) scale. Self-rated measures of health-related quality of life, subjective happiness and perceived social support were also obtained. Dimensionality, internal consistency, construct validity, criterion validity, and responsiveness to change of the QIDS-SR16 were examined. RESULTS: Exploratory and confirmatory factor analyses replicated the original one-factor structure. The Spanish version of the QIDS-SR16 showed good to excellent internal consistency (α=0.88), convergent validity [HDRS17 (r=0.77), CGI-S (r=0.78)], and divergent validity [EuroQol-5D Visual Analogue Scale (r=-0.78), Subjective Happiness Scale (r=-0.72)]. The QIDS-SR16 was excellent in discriminating clinically significant from non-significant depressive symptomatology (area under ROC curve=0.93). It also showed a high sensitivity to treatment-related changes: patients with greater clinical improvement showed a greater decrease in QIDS-SR16 scores (p<0.001). LIMITATIONS: The study was conducted in a single center, which may limit the generalizability of the findings. CONCLUSIONS: The Spanish version of the QIDS-SR16 retains the soundness of metric characteristics of the original version which makes the scale an invaluable instrument to assess depressive symptoms.
BACKGROUND: Psychometrically robust and easy-to-administer scales for depressive symptoms are necessary for research and clinical assessment. This is a psychometric study of the Spanish version of the Quick Inventory of Depressive Symptomatology-Self-Report (QIDS-SR16) in a clinical sample. METHOD: One-hundred and seventy-three patients (65% women) with a psychiatric disorder including depressive symptoms were recruited. Such symptoms were assessed by means of the QIDS-SR16 and two interviewer-rated instruments: the 17-item Hamilton Depression Rating Scale (HDRS17) and the Clinical Global Impression-Severity (CGI-S) scale. Self-rated measures of health-related quality of life, subjective happiness and perceived social support were also obtained. Dimensionality, internal consistency, construct validity, criterion validity, and responsiveness to change of the QIDS-SR16 were examined. RESULTS: Exploratory and confirmatory factor analyses replicated the original one-factor structure. The Spanish version of the QIDS-SR16 showed good to excellent internal consistency (α=0.88), convergent validity [HDRS17 (r=0.77), CGI-S (r=0.78)], and divergent validity [EuroQol-5D Visual Analogue Scale (r=-0.78), Subjective Happiness Scale (r=-0.72)]. The QIDS-SR16 was excellent in discriminating clinically significant from non-significant depressive symptomatology (area under ROC curve=0.93). It also showed a high sensitivity to treatment-related changes: patients with greater clinical improvement showed a greater decrease in QIDS-SR16 scores (p<0.001). LIMITATIONS: The study was conducted in a single center, which may limit the generalizability of the findings. CONCLUSIONS: The Spanish version of the QIDS-SR16 retains the soundness of metric characteristics of the original version which makes the scale an invaluable instrument to assess depressive symptoms.
Authors: Laura Ospina-Pinillos; Tracey A Davenport; Alvaro Andres Navarro-Mancilla; Vanessa Wan Sze Cheng; Andrés Camilo Cardozo Alarcón; Andres M Rangel; German Eduardo Rueda-Jaimes; Carlos Gomez-Restrepo; Ian B Hickie Journal: JMIR Ment Health Date: 2020-02-08
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