CRP (> 162.375 mg/L = 1, < 162.375 mg/L = 0), delayed operation time (> 9.50 days = 1, < 9.50 days = 0), postoperative fever duration (> 3.50 days = 1, < 3.50 days = 0), whether admitted to the PICU (yes = 1, no = 0), whether having bacteremia (yes = 1, no = 0), whether having MRSA infection (yes = 1, no = 0) and whether having ≥ 2 operations (yes = 1, no = 0) were incorporated into the logistic regression analysis. Here, CRP is linked to bacterial infectious disease with sepsis.