title: The CORE system for sub-typing melancholic depression: Adaptation and psychometric properties of the Spanish version.
abstract: We report the development procedure for a Spanish version of the CORE measure for subtyping melancholic depression and its psychometric properties. The sample comprised two subsets of depressive patients: 117 in-patients clinically assessed after admission and before discharge; and 34 in- and out-patients who were video-recorded, with each recording being rated by independent raters and re-rated six months later. The internal consistency of the Spanish version of the CORE was high, with Cronbach's alpha coefficient of 0.93 for the total CORE score. High intra-class correlation coefficient for the total score (0.96) and the three subscales (around 0.8) indicate high inter-rater reliability. Baseline and six-month ratings of video-recordings showed high test-retest reliability. Regarding construct validity, the correlation between the CORE and the Newcastle endogeneity scale scores was 0.64. A ROC curve generated an optimal cut-off of 10 to predict the definition of endogeneity/melancholia based on the Newcastle score >=6 and the DSM-IV-TR definition of melancholia. The comparison between the CORE scores at admission and at discharge revealed large differences, indicating demonstrable sensitivity to change. The Spanish version of the CORE system is a reliable and valid instrument for sub-typing depression in terms of melancholic versus non-melancholic sub-types.
authors.affiliation: Department of Psychiatry, Bellvitge University Hospital, IDIBELL, CIBERSAM, Department of Clinical Sciences, University of Barcelona, Barcelona, Spain. Electronic address: vsoria@bellvitgehospital.cat.
authors.forename: Virginia
authors.initials: V
authors.lastname: Soria
authors.affiliation: Institut Universitari d' Investigació en Ciències de la Salut (IUNICS), Red de Actividades Preventivas y de Promoción de la Salud (Rediapp), Hospital Joan March, Universitat de les Illes Balears, Palma de Mallorca, Spain.
authors.forename: Margalida
authors.initials: M
authors.lastname: Vives
authors.affiliation: Department of Psychiatry, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí- Universitat Autònoma de Barcelona, Barcelona, Spain.
authors.forename: Èrika
authors.initials: È
authors.lastname: Martínez-Amorós
authors.affiliation: School of Psychiatry, University of New South Wales, Black Dog Institute, Sydney, Australia.
authors.forename: Verònica
authors.initials: V
authors.lastname: Gálvez
authors.affiliation: Institut Universitari d' Investigació en Ciències de la Salut (IUNICS), Red de Actividades Preventivas y de Promoción de la Salud (Rediapp), Hospital Joan March, Universitat de les Illes Balears, Palma de Mallorca, Spain.
authors.forename: Saray
authors.initials: S
authors.lastname: Monzón
authors.affiliation: Department of Psychiatry, Bellvitge University Hospital, IDIBELL, CIBERSAM, Department of Clinical Sciences, University of Barcelona, Barcelona, Spain.
authors.forename: José M
authors.initials: JM
authors.lastname: Crespo
authors.affiliation: Institut Universitari d' Investigació en Ciències de la Salut (IUNICS), Red de Actividades Preventivas y de Promoción de la Salud (Rediapp), Hospital Joan March, Universitat de les Illes Balears, Palma de Mallorca, Spain.
authors.forename: Margalida
authors.initials: M
authors.lastname: Gili
authors.affiliation: Department of Psychiatry, Bellvitge University Hospital, IDIBELL, CIBERSAM, Department of Clinical Sciences, University of Barcelona, Barcelona, Spain.
authors.forename: José M
authors.initials: JM
authors.lastname: Menchón
authors.affiliation: Institut Universitari d' Investigació en Ciències de la Salut (IUNICS), Red de Actividades Preventivas y de Promoción de la Salud (Rediapp), Hospital Joan March, Universitat de les Illes Balears, Palma de Mallorca, Spain.
authors.forename: Miquel
authors.initials: M
authors.lastname: Roca
authors.affiliation: School of Psychiatry, University of New South Wales, Black Dog Institute, Sydney, Australia.
authors.forename: Gordon
authors.initials: G
authors.lastname: Parker
authors.affiliation: Department of Psychiatry, Bellvitge University Hospital, IDIBELL, CIBERSAM, Department of Clinical Sciences, University of Barcelona, Barcelona, Spain. Electronic address: murretavizcaya@bellvitgehospital.cat.
authors.forename: Mikel
authors.initials: M
authors.lastname: Urretavizcaya
mesh_terms: D000328:Adult; D000368:Aged; D003866:Depressive Disorder / Q000145:classification / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results; D013030:Spain
keywords: CORE system; Depression subtypes; Major depression; Melancholia; Psychomotor disturbances