Prediction Model for Anemia After Bariatric Surgery
Recruiting
- Conditions
- AnemiaBariatric Surgery
- Registration Number
- NCT06170749
- Lead Sponsor
- China-Japan Friendship Hospital
- Brief Summary
To develop and validate a prediction model for estimating the short and long-term risk of anemia after bariatric surgery.
- Detailed Description
This study aims to develop and validate a prediction model for estimating the probability of anemia for patients with obesity one, three, and five years after sleeve gastrectomy and Roux-en-Y gastric bypass, using preoperative clinical and laboratory data.
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 600
Inclusion Criteria
- aged between 16-70 years;
- body mass index (BMI) ≥ 27.5 kg/m2;
- complete preoperative and follow-up data.
Exclusion Criteria
- vegetarian;
- other bariatric procedures;
- renal failure at baseline;
- postoperative bleeding (it was defined as a drop in hemoglobin levels > 3 g/dL or a confirmed blood loss requiring treatment after surgery);
- incomplete preoperative and follow-up data.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method AUCs of the prediction model at 1, 3, 5 years 5 years This metric shows the discrimination ability of the prediction model.
- Secondary Outcome Measures
Name Time Method Brier score 5 years This metric shows the calibration of the model. The Brier score (on a scale ranging from 0 to 1), which calculates the difference between the estimated and observed risk for malignancy with values closer to 0 indicating better calibration, was used to evaluate model calibration.
Trial Locations
- Locations (1)
Yuntao Nie
🇨🇳Beijing, China