Measuring the severity of depression through a self-report inventory. A comparison of logistic, factorial and implicit models.
J Affect Disord
; 22(1-2): 55-64, 1991.
Article
em En
| MEDLINE
| ID: mdl-1880309
ABSTRACT
The present study investigates the psychometric adequacy of a self-report inventory of depression (the QD2) with respect to the severity of depressive symptoms, within the framework of a unidimensional model of depressive states. Responses to the 52 QD2 items, by 481 subjects divided into four groups (depressed, psychiatric, somatic and control), were subjected to a Rasch analysis. Results show that 15 items (QSD(R1] display a satisfactory goodness of fit for both items and persons, as defined by the Rasch model. This set of items, solely related to 'pure' depression, gives a measure of the severity of depression, free from anxiety symptoms. The discussion focuses upon the advantages of the Rasch model as compared to traditional tests. The Rasch 15-item solution should provide a parsimonious tool for future studies on the classification of depressive disorders.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Inventário de Personalidade
/
Transtorno Bipolar
/
Transtorno Depressivo
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Ano de publicação:
1991
Tipo de documento:
Article