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Figure 1 Kaplan-Meier survival curves of all patients divided according to their highest postoperative troponin level: Group I—cTn-I  0.6 ng/ml and cTn-T 0.03 ng/ml; Group II—0.6 ng/ml < cTn-I 1.5 ng/ml and/or 0.03 ng/ml < cTn-T 0.1 ng/ml; Group III—1.5 ng/ml < cTn-I 3.1 ng/ml and/or 0.1 ng/ml < cTn-T 0.2 ng/ml; Group IV—cTn-I > 3.1 ng/ml and/or cTn-T > 0.2 ng/ml; Groups II, III, and IV had worse long-term survival than Group I (p = 0.047, 0.007, and 0.001, respectively, by log-rank test). cTn = cardiac troponin.
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