Odds ratios for risk of death at 6 months in each peak CK-MB category relative to the risk in the category without CK-MB elevation (CK-MB 0 to 1 times upper limit of normal), depicted both for PCI-related CK-MB elevation and spontaneous CK-MB elevation in patients with acute coronary syndromes treated medically. Peak CK-MB level as ratio relative to upper limit of normal. Vertical lines indicate 95% confidence intervals; CK-MB, creatine kinase-MB; and PCI, percutaneous coronary intervention.
