Table 5 Independent risk factors for postoperative mortality within 30 days after surgery.

CDI

7.717

1.670

35.662

0.009*

   ≤45

Ref.

   45–65

1.925

1.008

3.677

0.047*

   >65

2.809

1.489

5.299

0.001*

   Any infection excluding CDI

0.660

0.440

0.988

0.044*

   Pneumonia

2.939

1.786

4.837

<0.001*

   1^st generation cephalosporins

0.638

0.424

0.959

0.031*

   2^nd generation cephalosporins

0.597

0.394

0.904

0.015*

   4^th generation cephalosporins

2.910

1.483

5.707

0.002*

   Penicillins

2.813

1.838

4.306

<0.001*

   Glycopeptides

2.051

1.288

3.267

0.002*

   Cabapenems

1.878

1.089

3.238

0.023*

   1

Ref.

   2

1.458

0.816

2.604

0.202

   3 or more

3.016

1.648

5.519

<0.001*