Table 3 Cox proportional hazards regression results for 5-year mortality among patients who underwent elective surgery

Delirium

1.987

0.568

0.016

1.135

3.481

Age

1.006

0.011

0.560

0.986

1.027

Sex

0.772

0.219

0.362

0.442

1.347

Operative time

1.003

0.001

0.007

1.001

1.005

Atrial fibrillation

1.21

0.377

0.541

0.657

2.229

Diabetes mellitus

1.038

0.372

0.918

0.514

2.095

Hypertension

1.796

0.611

0.085

0.922

3.499

Creatinine

1.217

0.065

 < 0.001

1.097

1.351

Cerebral infarction

0.842

0.32

0.652

0.4

1.774

Valvular disease

0.551

0.243

0.177

0.232

1.309

Aortic disease

0.364

0.169

0.030

0.146

0.905

Adult congenital heart disease

0.332

0.291

0.208

0.060

1.849

Redo surgery

0.93

0.47

0.887

0.345

2.507

Pulmonary thromboendarterectomy

0.333

0.364

0.314

0.039

2.833

Isolated CABG

0.981

0.625

0.976

0.282

3.418

Total transfusion volume

1.024

0.012

0.043

1.001

1.048