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  • A clinical prediction rule based on preoperative factors predicted the development of delirium after cardiac surgeryCommentary

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Clinical prediction guide
A clinical prediction rule based on preoperative factors predicted the development of delirium after cardiac surgery

https://doi.org/10.1136/ebn.12.3.90

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    QUESTION

    Can a clinical prediction rule based on preoperative factors accurately predict the development of delirium after cardiac surgery?

    METHODS

    Design:

    2 cohort studies: 1 for derivation and 1 for validation of the prediction model.

    Setting:

    2 academic centres and 1 Veterans Administration hospital (derivation set), and 1 academic medical centre and 1 Veterans Administration hospital (validation set).

    Patients:

    122 patients (mean age 75 y, 80% men) for the derivation set and 109 patients (mean age 73 y, 73% men) for the validation set. Patients were planning to have cardiac surgery (coronary artery bypass graft [CABG], mitral or aortic valve replacement or repair, or combined CABG-valve). Exclusion criteria included residence >60 miles from study centre, medical …

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    Footnotes

    • Source of funding: Harvard Older Americans Independence Center and National Institutes of Health.