Variable

Unadjusted OR

95% CI

P value

Adjusted OR

95% CI

P-value

Surgical site infection

0.760

0.269 - 2.152

0.605

0.633

0.161 - 2.489

0.513

Anastomotic leakage

1.019

0.390 - 2.663

0.970

1.139

0.313 - 4.140

0.844

Pneumonia

2.952

1.118 - 7.798

0.029

3.003

1.117 - 8.072

0.029