CRP and infection: Among the eight variables (maximum daily CRP, temperature and WCC variations, ΔCRP, age, sex, APACHE II and admission diagnoses) entered as independent variables in the bivariate logistic regression equation, only four (maximum daily CRP, temperature and WCC variations, and ΔCRP) were found to be good predictors of infection (P < 0.05 and odds ratio ≥1.2).