CRP and clostridium difficile infection: Further multivariate analysis showed a significantly higher level of serum neutrophils, and CRP was observed in the active CD patients than inactive CD patients without CDI (OR = 1.395; 95% CI: 1.134–1.717; P < 0.05; OR = 1.021, 95% CI: 1.006–1.036; P < 0.05).