1. Diagnostic Value of C-Reactive Protein for Predicting Activity Level of Crohn’s Disease 
Patrick Chamouard, Zoe Richert, Nicolas Meyer, Gabriel Rahmi, René Baumann 
Clinical Gastroenterology and Hepatology 
Volume 4, Issue 7, Pages (July 2006)
DOI: /j.cgh
Copyright © 2006 American Gastroenterological Association Terms and Conditions

2. Figure 1
Measures of the VHI and the CDAI in a subgroup of 52 patients. VHI and CDAI were correlated (r = 0.708; P = .0001).
Clinical Gastroenterology and Hepatology 2006 4, DOI: ( /j.cgh )
Copyright © 2006 American Gastroenterological Association Terms and Conditions

3. Figure 2
Evolution of CRP and VHI levels during treatment of an acute CD phase in a sample of 10 patients with active CD (ileocolonic, n = 5; colonic, n = 4; small bowel CD, n = 1). After beginning of intravenous methyl-prednisolone (arrow), CRP quickly diminished. After 7 days, CRP mean was less than 2 × N; CRP returned to normal level (≤N) in 6 patients, whereas VHI mean was still markedly above the threshold of 150; no patient had a VHI <150. Data are expressed as mean ± standard error of the mean.
Clinical Gastroenterology and Hepatology 2006 4, DOI: ( /j.cgh )
Copyright © 2006 American Gastroenterological Association Terms and Conditions

4. Figure 3
ROC curve shows the relationship between sensitivity and 1-specificity in determining the predictive value of CRP for active CD, that is, a VHI ≥150. The area under the ROC curve (ROC AUC) was large: ROC AUC150 = (95% CI, 0.783–0.906; P = .0001).
Clinical Gastroenterology and Hepatology 2006 4, DOI: ( /j.cgh )
Copyright © 2006 American Gastroenterological Association Terms and Conditions