title: Application of depression rating scales in patients with Parkinson's disease with and without co-Occurring anxiety.
abstract: BACKGROUND
  In patients with Parkinson's disease (PD), depressive symptom rating scales facilitate identification of depressive disorders, which are common and disabling. Anxiety disturbances in PD, which lack valid assessment scales, frequently co-occur with PD-depression, are under-recognized, and require different interventions than depressive disorders. Whether high anxiety rates in PD confound depression scale performance or if any depression scales also predict anxiety disturbances is not known.
  
  
  OBJECTIVE
  To test the impact of co-occurring anxiety disorders on psychometric properties of depression rating scales in depressed PD patients and compare disability between PD patients with anxiety, depression, and comorbid anxiety and depressive disorders.
  
  
  METHODS
  PD subjects (n = 229) completed self-report and clinician-administered depression scales. Receiver operating characteristic curves were developed to estimate psychometric properties of each scale in those with depression alone, anxiety alone, and comorbid depression and anxiety. Between-group differences on all measures were examined.
  
  
  RESULTS
  Comorbid anxiety did not affect the psychometric properties of any scale when identifying depressive disorders, but is associated with greater symptom severity and disability. Depression-scale scores were not significantly different between subjects with anxiety disorders only and those without depressive or anxiety diagnoses.
  
  
  CONCLUSIONS
  Co-occurring anxiety disorders do not impact performance of depression rating scales in depressed PD patients. However, depression rating scales do not adequately identify anxiety disturbances alone or in patients with depression.
authors.affiliation: Houston VA HSR&D Center for Innovations in Quality, Effectiveness and Safety, Houston, TX, USA Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA Baylor College of Medicine, Houston, TX, USA.
authors.forename: Jessica
authors.initials: J
authors.lastname: Calleo
authors.forename: James R
authors.initials: JR
authors.lastname: Williams
authors.forename: Amber B
authors.initials: AB
authors.lastname: Amspoker
authors.forename: Leah
authors.initials: L
authors.lastname: Swearingen
authors.forename: Elaina S
authors.initials: ES
authors.lastname: Hirsch
authors.forename: Karen
authors.initials: K
authors.lastname: Anderson
authors.forename: Susanne R
authors.initials: SR
authors.lastname: Goldstein
authors.forename: Stephen
authors.initials: S
authors.lastname: Grill
authors.forename: Susan
authors.initials: S
authors.lastname: Lehmann
authors.forename: John T
authors.initials: JT
authors.lastname: Little
authors.forename: Russell L
authors.initials: RL
authors.lastname: Margolis
authors.forename: Justin
authors.initials: J
authors.lastname: Palanci
authors.forename: Gregory M
authors.initials: GM
authors.lastname: Pontone
authors.forename: Howard
authors.initials: H
authors.lastname: Weiss
authors.forename: Peter
authors.initials: P
authors.lastname: Rabins
authors.forename: Laura
authors.initials: L
authors.lastname: Marsh
mesh_terms: D000368:Aged; D001008:Anxiety Disorders / Q000150:complications / Q000523:psychology*; D003866:Depressive Disorder / Q000150:complications / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications / Q000523:psychology*; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011795:Surveys and Questionnaires
keywords: Parkinson's disease; anxiety; depression; psychiatric disorder; rating scale