A validation study of the Cardiac Depression Scale (CDS) in a UK population.
OBJECTIVE
This study was designed to validate the Cardiac Depression Scale (CDS) in a UK cardiac population.


METHODS
A battery of questionnaires (the Medical Outcomes Study Short-Form 36 [SF-36] Health Survey, the Beck Depression Inventory [BDI], the Hospital Anxiety and Depression Scale [HADS] and the Cardiac Depression Scale [CDS]) was mailed to 487 individuals with coronary heart disease (CHD) recruited from cardiac support groups. The process was repeated on a subsample of 80 participants four-six weeks later for the purpose of test-retest analysis.


RESULTS
The response rate from the first administration was 81% and from the test-retest subsample 54%. Factor analysis revealed a one-factor solution with a high internal reliability (Cronbach's alpha = 0.93) and an acceptable test-retest reliability (0.79). Concurrent validation against the SF-36, BDI and HADS demonstrated strong correlations.


CONCLUSIONS
The CDS is both a reliable and sensitive instrument for measuring depression in cardiac patients.
University of York, UK.
Yvonne
Y
Birks
Alun
A
Roebuck
David R
DR
Thompson
D000368:Aged; D003863:Depression / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology*; D005163:Factor Analysis, Statistical; D005260:Female; D006331:Heart Diseases / Q000453:epidemiology / Q000523:psychology*; D006801:Humans; D008297:Male; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D006113:United Kingdom