Using the Short Form-36 mental summary score as an indicator of depressive symptoms in patients with coronary heart disease

Rosanna Tavella, Tracy Air, Graeme Tucker, Robert Adams, John Beltrame, Geoff Schrader

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Background Depression is common in patients with cardiac disease; however, the use of depression-specific health instruments is limited by their increased responder and analyst burden. The study aimed to define a threshold value on the Short Form-36 (SF-36) mental component summary score (MCS) that identified depressed cardiac patients as measured by the Centre for Epidemiologic Studies Depression Scale (CES-D). Methods An optimal threshold was determined using receiver-operating characteristic (ROC) curves on SF-36 and CES-D data from a large cardiac cohort (N = 1,221). The performance of this threshold was evaluated in a further two cardiac populations. Results In the index cohort, an SF-36 MCS score of B45 was revealed as an optimal threshold according to maximal Youden Index, with high sensitivity (77%, 95% CI = 74-80%) and specificity (73%, 95% CI = 69-77%). At this threshold, in a second sample of hospital cardiac patients, sensitivity was 93% (95% CI = 76-99%) and specificity was 64% (95% CI = 49-77%). In a final sample generated from a community population, specificity was 100% (95% CI = 85-100%) and sensitivity was 68% (95% CI = 61-74%) at the cut-off of 45. Conclusion The SF-36 MCS may be a useful research tool to aid in the classification of cardiac patients according to the presence or absence of depressive symptoms.

    Original languageEnglish
    Pages (from-to)1105-1113
    Number of pages9
    JournalQuality of Life Research
    Volume19
    Issue number8
    DOIs
    Publication statusPublished - 1 Oct 2010

    Keywords

    • Centre for epidemiologic studies depression scale
    • Coronary heart disease
    • Depression
    • Optimal threshold
    • Short-Form 36 mental summary score

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