Abstract
variants of colonoscopy, and 9 variants of CTE were significant different between ITB and ileocolic CD. But no parameters of biopsy was found significant different between two groups. 3. Multivariate analysis showed that 8 variants were independent factors for the differential diagnosis between ITB and ileocolic CD, including PLT, TSPOT positive, transverse ulcer, patulous ileocecal valve, involvement of sigmoid colon, involvement of small intestine, comb sign, and perianal lesion (Table 1). 4. Predicted model was constructed by multivariate analysis as follows, Logit P = 2.703 + 0.012·PLT 4.264·(TSPOT positive) 4.253·(transverse ulcer) 3.569·(patulous ileocecal valve) + 1.507·(involvement of sigmoid colon) + 1.869·(involvement of small intestine) + 1.885·(comb sign) + 1.797·(perianal lesion). The best diagnostic cut-off point (P= 0.4979) are obtained by ROC analysis (Figure 1). The sensitivity and specificity of the model to identify ITB patients were 88.57% and 100% respectively, and the AUC was 0.9798.
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