title: Psychometric properties of the cardiac depression scale in patients with coronary heart disease.
abstract: BACKGROUND
  This study examined the psychometric properties of the Cardiac Depression Scale (CDS) in a sample of coronary heart disease (CHD) patients.
  
  
  METHODS
  A total of 152 patients were diagnosed with coronary heart disease and were administered the CDS along with the Beck Depression Inventory- 2 (BDI-2) and the State Trait Anxiety Inventory (STAI) 3.5-months after cardiac hospitalization.
  
  
  RESULTS
  The CDS's factorial composition in the current sample was similar to that observed in the original scale. Varimax-rotated principal-components analyses extracted six factors, corresponding to mood, anhedonia, cognition, fear, sleep and suicide. Reliability analyses yielded internal consistency α - coefficients for the six subscales ranging from 0.62 to 0.82. The CDS showed strong concurrent validity with the BDI-II (r = 0.64). More patients were classified as severely depressed using the CDS. Both the CDS and the BDI-2 displayed significantly strong correlations with the STAI (r = 0.61 and r = 0.64), respectively.
  
  
  CONCLUSIONS
  These findings encourage the use of the CDS for measuring the range of depressive symptoms in those with CHD 3.5 months after cardiac hospitalization.
authors.affiliation: Melbourne School of Psychological Sciences, The University of Melbourne, Victoria 3010, Australia. litzak@unimelb.edu.au
authors.forename: Litza A
authors.initials: LA
authors.lastname: Kiropoulos
authors.forename: Ian
authors.initials: I
authors.lastname: Meredith
authors.forename: Andrew
authors.initials: A
authors.lastname: Tonkin
authors.forename: David
authors.initials: D
authors.lastname: Clarke
authors.forename: Paul
authors.initials: P
authors.lastname: Antonis
authors.forename: Julie
authors.initials: J
authors.lastname: Plunkett
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003327:Coronary Disease / Q000150:complications*; D003863:Depression / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics / Q000295:instrumentation*; D011788:Quality of Life; D015203:Reproducibility of Results; D012944:Social Support