protocolSection identificationModule nctId: NCT06275061, orgStudyIdInfo id: KY-2020-021, briefTitle: Chinese Obesity and MEtabolic Surgery Database (COMES Database), acronym: COMES, statusModule overallStatus: RECRUITING, startDateStruct date: 2020-05-01, primaryCompletionDateStruct date: 2030-12-31, completionDateStruct date: 2040-12-31, studyFirstPostDateStruct date: 2024-02-23, lastUpdatePostDateStruct date: 2024-02-23, sponsorCollaboratorsModule leadSponsor name: Jinan University Guangzhou, class: OTHER, collaborators name: Chinese Obesity and Metabolic Surgery Collaborative, descriptionModule briefSummary: The purpose of the Chinese Obesity and MEtabolic Surgery Database (COMES Database) is to collect data and examine the long-term effects of metabolic and bariatric surgery on obesity and metabolic disorders in the Chinese population., conditionsModule conditions: Obesity, conditions: Metabolic Surgery, conditions: Bariatric Surgery, conditions: Weight Loss, designModule studyType: OBSERVATIONAL, designInfo observationalModel: COHORT, timePerspective: PROSPECTIVE, enrollmentInfo count: 1000000, type: ESTIMATED, armsInterventionsModule interventions name: Metabolic and Bariatric Surgery, outcomesModule primaryOutcomes measure: Excess weight loss effect of metabolic and bariatric surgery after 1 year, secondaryOutcomes measure: Excess weight loss effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Excess weight loss effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Excess weight loss effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery after 1 year, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery after 1 year, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery after 1 year, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery after 1 year, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, secondaryOutcomes measure: Glycemic control effect of metabolic and bariatric surgery in long-term follow-ups, otherOutcomes measure: Adverse events rate of metabolic and bariatric surgery, eligibilityModule sex: ALL, stdAges: CHILD, stdAges: ADULT, stdAges: OLDER_ADULT, contactsLocationsModule locations facility: The First Affiliated Hospital of Jinan University, status: RECRUITING, city: Guangzhou, state: Guangdong, zip: 510630, country: China, contacts name: Wah Yang, MD, role: CONTACT, phone: +8615920373823, email: yangwah@qq.com, geoPoint lat: 23.11667, lon: 113.25, hasResults: False