CRP and abdominal abscess: Univariate analysis showed that disease site, disease behavior, disease activity, abdominal abscess, intestinal perforation, intestinal obstruction, hormonal drug therapy, infliximab therapy, BMI, white blood cell count, platelet, neutrophils, lymphocyte, C-reactive protein, erythrocyte sedimentation rate, ALB, NLR, PLR, CAR, SII, and PNI were factors influencing the development of postoperative intestinal fistula in patients with CD (P < .05) (Tables 1–3).