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Objectives: Use claims data to assess healthcare resource utilization (HCRU) and cost for patients with ulcerative colitis (UC) who had surgery and patients who did not.UC patients from a German health insurance were included between 01/01/2010–31/12/2017. Patients with proctocolectomy or colectomy between 01/07/2010 and 31/12/2014 were identified, and surgery date was set as index. For patients with IPAA, the last surgery in the 6 months was taken as index. Non-surgery patients received random index. After propensity score matching, UC-related HCRU and cost were observed for three years post-index.Of 21,392 UC patients, 85 underwent surgery and 2655 did not. After matching, 76 were included in the surgery group and 114 in the non-surgery group. Matched cohorts did not differ in baseline characteristics and mortality rates where high in both groups (21.1% and 29.0%, respectively). The percentage of patients with at least one hospitalization in the follow-up period was higher in the surgery (53.9%) compared to the non-surgery group (25.4%, p<0.001). In contrast, the number of outpatient prescriptions of UC-related drugs in the non-surgery group (11.2) was almost twice as large as in the surgery group (5.8, p<0.001). Hospitalization cost was 4.6 times higher in the surgery (1955.5€) than in the non-surgery group (419.6€, p<0.001). Medication cost was three times higher in the non-surgery group (6519€) compared to the surgery group (2151.7€, p<0.001).Based on hospitalizations, outpatient visits, and medical treatment, results show a considerable patient burden in UC from surgery complications or disease exacerbation in case of colectomy.Methods: Use claims data to assess healthcare resource utilization (HCRU) and cost for patients with ulcerative colitis (UC) who had surgery and patients who did not.UC patients from a German health insurance were included between 01/01/2010–31/12/2017. Patients with proctocolectomy or colectomy between 01/07/2010 and 31/12/2014 were identified, and surgery date was set as index. For patients with IPAA, the last surgery in the 6 months was taken as index. Non-surgery patients received random index. After propensity score matching, UC-related HCRU and cost were observed for three years post-index.Of 21,392 UC patients, 85 underwent surgery and 2655 did not. After matching, 76 were included in the surgery group and 114 in the non-surgery group. Matched cohorts did not differ in baseline characteristics and mortality rates where high in both groups (21.1% and 29.0%, respectively). The percentage of patients with at least one hospitalization in the follow-up period was higher in the surgery (53.9%) compared to the non-surgery group (25.4%, p<0.001). In contrast, the number of outpatient prescriptions of UC-related drugs in the non-surgery group (11.2) was almost twice as large as in the surgery group (5.8, p<0.001). Hospitalization cost was 4.6 times higher in the surgery (1955.5€) than in the non-surgery group (419.6€, p<0.001). Medication cost was three times higher in the non-surgery group (6519€) compared to the surgery group (2151.7€, p<0.001).Based on hospitalizations, outpatient visits, and medical treatment, results show a considerable patient burden in UC from surgery complications or disease exacerbation in case of colectomy.Results: Use claims data to assess healthcare resource utilization (HCRU) and cost for patients with ulcerative colitis (UC) who had surgery and patients who did not.UC patients from a German health insurance were included between 01/01/2010–31/12/2017. Patients with proctocolectomy or colectomy between 01/07/2010 and 31/12/2014 were identified, and surgery date was set as index. For patients with IPAA, the last surgery in the 6 months was taken as index. Non-surgery patients received random index. After propensity score matching, UC-related HCRU and cost were observed for three years post-index.Of 21,392 UC patients, 85 underwent surgery and 2655 did not. After matching, 76 were included in the surgery group and 114 in the non-surgery group. Matched cohorts did not differ in baseline characteristics and mortality rates where high in both groups (21.1% and 29.0%, respectively). The percentage of patients with at least one hospitalization in the follow-up period was higher in the surgery (53.9%) compared to the non-surgery group (25.4%, p<0.001). In contrast, the number of outpatient prescriptions of UC-related drugs in the non-surgery group (11.2) was almost twice as large as in the surgery group (5.8, p<0.001). Hospitalization cost was 4.6 times higher in the surgery (1955.5€) than in the non-surgery group (419.6€, p<0.001). Medication cost was three times higher in the non-surgery group (6519€) compared to the surgery group (2151.7€, p<0.001).Based on hospitalizations, outpatient visits, and medical treatment, results show a considerable patient burden in UC from surgery complications or disease exacerbation in case of colectomy.Conclusions: Use claims data to assess healthcare resource utilization (HCRU) and cost for patients with ulcerative colitis (UC) who had surgery and patients who did not.UC patients from a German health insurance were included between 01/01/2010–31/12/2017. Patients with proctocolectomy or colectomy between 01/07/2010 and 31/12/2014 were identified, and surgery date was set as index. For patients with IPAA, the last surgery in the 6 months was taken as index. Non-surgery patients received random index. After propensity score matching, UC-related HCRU and cost were observed for three years post-index.Of 21,392 UC patients, 85 underwent surgery and 2655 did not. After matching, 76 were included in the surgery group and 114 in the non-surgery group. Matched cohorts did not differ in baseline characteristics and mortality rates where high in both groups (21.1% and 29.0%, respectively). The percentage of patients with at least one hospitalization in the follow-up period was higher in the surgery (53.9%) compared to the non-surgery group (25.4%, p<0.001). In contrast, the number of outpatient prescriptions of UC-related drugs in the non-surgery group (11.2) was almost twice as large as in the surgery group (5.8, p<0.001). Hospitalization cost was 4.6 times higher in the surgery (1955.5€) than in the non-surgery group (419.6€, p<0.001). Medication cost was three times higher in the non-surgery group (6519€) compared to the surgery group (2151.7€, p<0.001).Based on hospitalizations, outpatient visits, and medical treatment, results show a considerable patient burden in UC from surgery complications or disease exacerbation in case of colectomy. 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