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Title: Diagnostic Validity and Factor Analysis of Montgomery-Asberg Depression Rating Scale in Parkinson Disease Population.
Authors: Ketharanathan, Tharini
Hanwella, Raveen
Weerasundera, Rajiv
de Silva, Varuni Asanka
Affiliation: North Western Mental Health, Melbourne Health, Victoria, Australia
Department of Psychological Medicine, University of Colombo, Colombo, Sri Lanka..
Top End Mental Health Service, Royal Darwin Hospital, Darwin, Australia..
Department of Psychological Medicine, University of Colombo, Colombo, Sri Lanka..
Issue Date: May-2016
Citation: Journal of geriatric psychiatry and neurology 2016-05; 29(3): 115-9
Abstract: The Montgomery-Asberg Depression Rating Scale (MADRS) is commonly used to assess major depression in Parkinson disease (PD), but studies on its utility are few. This study examines the validity and factor structure of MADRS in population with PD. In 104 patients with idiopathic PD, major depression was diagnosed by Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition, Text Revision; DSM-IV-TR) criteria, and all patients were rated by MADRS. The MADRS showed good concurrent validity with DSM-IV-TR criteria. The diagnostic cutoff was established as 16/17 (sensitivity 97.43, specificity 100%, positive predictive value 100%, and negative predictive value 98.48%). Factor analysis identified 3 factors, accounting for 76% of total variance: "sadness-anhedonia" comprising apparent sadness, reported sadness, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal ideas; "anxiety" with reduced sleep and inner tension; and "vegetative symptoms" with reduced appetite. The MADRS has diagnostic utility in major depression in PD. The 3-factor structure of MADRS may help to understand the different dimensions of major depression and identify distinct symptom subgroups in this population.
DOI: 10.1177/0891988715606232
ISSN: 0891-9887
Type: Journal Article
Validation Studies
Subjects: Parkinson disease
geriatric psychiatry
mental health
Aged, 80 and over
Anxiety Disorders
Depressive Disorder, Major
Diagnostic and Statistical Manual of Mental Disorders
Middle Aged
Parkinson Disease
Psychiatric Status Rating Scales
Reproducibility of Results
Sensitivity and Specificity
Factor Analysis, Statistical
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