|Characteristic||Odds Ratio||95% CI||p Value|
|Ejection fraction†(<35% vs. ≥35%)||2.72||1.65–4.47||<0.001|
|Congestive heart failure||2.01||1.24–3.27||<0.01|
|Peripheral vascular disease||1.71||1.08–2.70||<0.05|
|Peak CK-MB isoenzyme ratio|
|≥5 and <10 ULN||2.01||1.19–3.37||<0.01|
|≥10 and <20 ULN||2.27||1.20–4.30||<0.05|
↵∗ The initial full model included ejection fraction; history of MI, congestive heart failure, cerebrovascular disease, peripheral vascular disease, cardiac arrhythmias and insulin-dependent diabetes; retrograde cardioplegia; intermittent cross-clamping; duration of cardiopulmonary bypass; total surgical time; peak CK-MB enzyme ratio; and ECG abnormalities;
↵† a mean ejection fraction of 50% was imputed for the 751 patients with missing ejection fraction values. Variables not significantly predicting six-month mortality were removed from the model in subsequent steps, and estimates for the remaining variables were recalculated.
↵legend Abbreviations as in Tables 1 and 2.