2.6. Study indicators
disease behavior, extra-intestinal, Crohn’s disease, perianal disease
VIRUS, CYTOMEGALOVIRUS, DISEASE, EPSTEIN, DISEASE, COMPLICATIONS
The required clinical information was ascertained through the medical record system in accordance with the inclusion and exclusion criteria. The main components included:Baseline demographic information: sex, age, body mass index (BMI).Baseline disease information: disease duration (length of time from diagnosis of CD to first surgical treatment), clinical presentation, disease behavior, disease site, extra-intestinal manifestations, perianal disease, and complications.Disease assessment data: Crohn’s disease activity index (CDAI) score.History of appendectomy.Preoperative medication use: 5-mesalazine-class drugs, hormonal drugs, immunosuppressants, infliximab.Laboratory indicators: complete blood count, C-reactive protein, erythrocyte sedimentation rate, albumin (ALB), globulin, D-dimer, Epstein–Barr virus (EBV) DNA or anti-EBV IgM, cytomegalovirus DNA, Surgical status: emergency or elective surgery, open or laparoscopic surgery, type of anastomosis.