2.8. Statistical analysis
Statistical analyses were performed using SPSS for MAC (, version 26.0; (IBM Corporation, Armonk, New York). The Categorical data, (e.g., gender, American society of anesthesiologists-classification, type of surgery, previous surgery, Surgical method, CDC classification, Prophylactic antibiotics, wound healing and term of operation) were compared using the chi-square test or Fishers exact test. Student 