Table 3: Correlation of serum dipeptidyl peptidase-4 values

and quantitative surgical variables.

Variable

Correlation coefficient

p

Intubation days

-0.2154

0.3358

Days with tracheostomy

-0.3201

0.1464

Number of dilations

-0.0799

0.7236

Number of rings resected

-0.1595

0.4784

Bleeding

0.4893

0.0208

Surgical time

-0.061

0.7874