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Table 1 Case-control analysis

From: Does chronic metformin therapy offer cardiomyoprotection in coronary artery bypass grafting surgery patients? A case-control study

    Statistics,
  Metformin Nonmetformin P value
Mortality 1/81 8/260 0.24
28 days free ICU (days) 23.4 22.9 <0.04
CKMB T 0 hours (ng/ml) 21 26 <0.003
CKMB T+8 hours (ng/ml) 22 53 0.004
CKMB T+18 hours (ng/ml) 21.5 27.5 <0.012