Study	Reason for exclusion
Barreiro‐De Acosta 2019	This was a nationwide retrospective cohort study that evaluated 314 participants who underwent ileocaecal resection for CD. The main aim was to assess endoscopic monitoring and treatment decisions in CD patients in a real‐world setting. This study was excluded because the authors did not include outcomes of interest for this review.
Gonzales‐Lama 2015	This was a retrospective cohort study that evaluated 166 participants who underwent ileocaecal resection for CD. The main aim was to assess the role of colonoscopy‐based management of postoperative CD. This study was excluded because of all participants included in the final analysis were studied with colonoscopy and the definition of “colonoscopy‐based management” and “non‐colonoscopy‐based management” was only established among participants with endoscopic recurrence.
Papamichael 2012	This was a prospective cohort study that included 23 participants who underwent ileocaecal resection for CD. The main aim was to assess the role of adalimumab given immediately after surgery or at six months in case of endoscopic recurrence. This study was excluded because of participants of both groups were studied with colonoscopy at six months after surgery and in both groups the postoperative management was modified according to endoscopic findings.
Sorrentino 2012	This was a prospective cohort study that included 43 participants who underwent bowel resection for CD. The main aim was to investigate the impact of infliximab on early endoscopic lesions after resection for CD. This study was excluded because of all participants were studied with colonoscopy at six months after surgery. In all participants the prophylactic therapy was modified according to the endoscopic findings and only those with endoscopic recurrence were included in the final analysis.
Yamamoto 2009	This was a prospective cohort study that included 26 participants who underwent ileocaecal resection for CD. The main aim was to investigate the impact of infliximab on early endoscopic lesions after resection for CD. This study was excluded because of all participants were studied with colonoscopy at six months after surgery, only those participants with clinical remission and endoscopic recurrence were included in the analysis and the therapy was not modified according to the endoscopic findings.

CD: Chron's disease