Supplementary Material for: Quality of Life after Intestinal Resection in Patients with Crohn Disease: A Systematic Review

Background/Aims: Most patients with Crohn disease (CD) require surgery within 10 years of diagnosis. Intestinal resection is the most commonly performed operation although the effects on health-related quality of life (HRQOL), particularly long-term, are contentious. Methods: We conducted a systematic review evaluating the impact of intestinal resection on the HRQOL of CD patients, predictors of postoperative HRQOL, and patient satisfaction with surgery. Results: Nine studies including 1,108 CD patients undergoing intestinal resection were identified as eligible for inclusion. The median age at surgery was 29-41 years with varying follow-up period (range 30 days-5 years). Ileocolic resection was the most commonly performed operation on an elective basis (range 95-100%). HRQOL improved as early as 2 weeks postoperatively and lasted up to 5 years across both generic and gastrointestinal domains. Gender, smoking, and disease recurrence were potential predictors of postoperative HRQOL. Patient satisfaction is high with regard to surgery, with preference for a laparoscopic approach. Conclusion: Intestinal resection in CD patients improved HRQOL in the short- and long-term and patients describe high satisfaction about their surgery. Further studies are needed to validate potential predictors of postoperative HRQOL in this cohort.