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Table 6 Cox multivariate regression analysis investigating covariates associated with 1-year mortality

From: Improved outcome of patients with diabetes mellitus with good glycemic control in the cardiac intensive care unit: a retrospective study

  B SE Wald Sig. HR 95% CI HR
Lower Upper
30-day mortality (model without HbA1c)
 Sex 0.703 0.516 1.856 0.173 2.019 0.735 5.548
 Age 0.031 0.027 1.312 0.252 1.031 0.978 1.087
 Pulmonary edema 1.763 0.531 11.018 0.001 5.831 2.059 16.514
 Chronic renal failure − 0.281 0.845 0.111 0.739 0.755 0.144 3.953
 Smoking − 12.577 549.709 0.001 0.982 0.000 0.000 0.000
 Charlson comorbidity index 0.083 0.135 0.373 0.541 1.086 0.833 1.416
 Hypoglycemia − 0.297 1.065 0.078 0.780 0.743 0.092 5.994
 Glucose control − 1.112 0.589 3.562 0.059 0.329 0.104 1.044
 Acute coronary syndrome − 0.371 0.502 0.545 0.460 0.690 0.258 1.847
30-day mortality (model with HbA1c)
 Sex 1.944 1.278 2.315 0.128 6.990 0.571 85.555
 Age 0.143 0.079 3.279 0.070 1.154 0.988 1.348
 Pulmonary edema 2.602 1.049 6.157 0.013 13.491 1.728 105.350
 Chronic renal failure − 13.134 365.269 0.001 0.971 0.000 0.000 0.000
 Smoking − 9.011 483.484 0.000 0.985 0.000 0.000 0.000
 Charlson comorbidity index 0.197 0.303 0.423 0.516 1.218 0.672 2.207
 Hypoglycemia − 14.399 12,337.418 0.000 0.999 0.000 0.000 0.000
 Glucose control 0.442 1.359 0.106 0.745 1.556 0.109 22.313
 Acute coronary syndrome − 0.413 1.247 0.110 0.740 0.661 0.057 7.624
 HbA1c 0.204 0.410 0.248 0.619 1.227 0.549 2.741