CRP and infection: The specific calculation formula for predicting the risk of infection with DF by nomogram was Logit(P) = 2.342–0.051*age + 0.012*CRP + 1.386*(Wagner grade = 2) + 2.454*(Wagner grade = 3) + 1.744*(Wagner grade = 4) + 2.325(Wagner grade = 5) + 1.312* (PN = Yes)-1,699* (LEAD = Yes).