Postoperative Anemia After Bariatric Surgery
1 other identifier
observational
400
1 country
1
Brief Summary
To investigate the real incidence of short and long-term anemia after bariatric surgery, and explore the risk factors.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Feb 2024
Longer than P75 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
December 27, 2023
CompletedFirst Posted
Study publicly available on registry
January 10, 2024
CompletedStudy Start
First participant enrolled
February 1, 2024
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 31, 2027
August 3, 2025
July 1, 2025
2.9 years
December 27, 2023
July 31, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Incidence of anemia after 1, 3, 5, 10 years
Incidence of anemia after 1, 3, 5, 10 years
10 years
Secondary Outcomes (2)
Incidence of anemia-related nutrient deficiencies
10 years
Hazard ratios for the risk factors of postoperative anemia
10 years
Eligibility Criteria
Patients without anemia at baseline who will undergo bariatric surgery will be included.
You may qualify if:
- Patients who will undergo sleeve gastrectomy or Roux-en-Y gastric bypass
- Aged between 16 and 70 years
- Patients who is not diagnosed as anemia at baseline
You may not qualify if:
- Patients who have anemia at baseline
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Yuntao Nie
Beijing, 100029, China
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Yuntao Nie, M.D.
China-Japan Friendship Hospital
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Target Duration
- 10 Years
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Principal Investigator
Study Record Dates
First Submitted
December 27, 2023
First Posted
January 10, 2024
Study Start
February 1, 2024
Primary Completion (Estimated)
December 31, 2026
Study Completion (Estimated)
December 31, 2027
Last Updated
August 3, 2025
Record last verified: 2025-07
Data Sharing
- IPD Sharing
- Will not share
Data should be accessed with the permission of the principal investigator.