title: Quick rating of depressed mood in patients with anxiety disorders.
abstract: BACKGROUND
  Regular assessment of mood is often important for treatment but traditional measures can be time-consuming. A quick'litmus test' is needed.
  
  
  OBJECTIVE
  To test the reliability and validity of a single-item scale for mood.
  
  
  METHODS
  Mood was measured repeatedly in 812 patients (258 in-patients, 554 out-patient) being treated in an anxiety disorders unit. Patients had self- and clinician ratings of a single-item depression scale and also rated the 21-item Beck Depression Inventory (BDI-21). Their single-item scores were compared with BDI-21 scores and with outcome measures.
  
  
  RESULTS
  The single-item depression scores correlated 0.71 to 0.78 with the BDI-21 scores. Clinically useful cut-off points were identified. Depression scores at discharge, but not pre-treatment, correlated significantly with improvement in the main problem.
  
  
  CONCLUSIONS
  The quick single-item depression scale, whether rated by patient or by clinician, is a reasonable rough guide to mood in anxiety disorders and saves time for the patient and the clinician compared to longer measures.
authors.affiliation: Camden and Islington Community Health Services NHS Trust, University College London Medical School, London.
authors.forename: N
authors.initials: N
authors.lastname: McKenzie
authors.forename: I
authors.initials: I
authors.lastname: Marks
mesh_terms: D000341:Affective Disorders, Psychotic / Q000175:diagnosis*; D001008:Anxiety Disorders / Q000523:psychology*; D003866:Depressive Disorder / Q000175:diagnosis*; D006801:Humans; D011379:Prognosis; D011569:Psychiatric Status Rating Scales / Q000592:standards; D012680:Sensitivity and Specificity