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The effect of age, baseline left ventricular ejection fraction, and procedure type on the hazard rates of ICU length of stay. Without adjusting for other predictors (univariate model), age >65 and multiple cardiac procedures (e.g., CABG and valve surgery) were significantly associated with prolonged ICU-LOS while a reduced preoperative LVEF was not associated with ICU-LOS. For presentation, data are truncated to 500 h (95% of values were at or below 500 h of ICU stay).
