J Metab Bariatr Surg.
2023 Dec;12(2):67-75. 10.17476/jmbs.2023.12.2.67.
Comparative Analysis of Various Weight Loss Success Criteria Models After Bariatric Metabolic Surgery in Korean Morbid Obese Patients
- Affiliations
-
- 1Department of Surgery, Kyung Hee University Hospital at Gangdong, Seoul, Korea
- 2Department of Surgery, Korea University Guro Hospital, Seoul, Korea
- 3Department of Surgery, Korea University College of Medicine, Seoul, Korea
- 4Department of Surgery, Korea University Anam Hospital, Seoul, Korea
- 5Department of Surgery, Korea University Ansan hospital, Ansan, Korea
- 6Department of Surgery, Kyung Hee University School of Medicine, Seoul, Korea
- KMID: 2552773
- DOI: http://doi.org/10.17476/jmbs.2023.12.2.67
Abstract
- Purpose
To identify weight loss prediction models by validating previous models using weight loss success criteria.
Materials and Methods
Patients with morbid obesity from 4 hospitals were retrospectively analyzed between Jan 2019 and 2022. Preoperative demographics, postoperative data, and 1-year follow-up weight loss outcomes were compared between 2 groups who underwent laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB). Additionally, the predictive factors for the success of excess weight loss (EWL) (>50%) and total weight loss (TWL) (>25%) were analyzed.
Results
Of the 162 patients, 137 were enrolled during the study period, 75 underwent LSG, and 62 underwent LRYGB. The >50% EWL and >25% TWL 1 year after surgery were 61.3% and 43.1%, respectively. Diabetes mellitus medication use was reduced in 94.8% of patients with type 2 diabetes mellitus. Male sex and body mass index (BMI) were independent risk factors for successful weight loss (SWL) or >50% EWL (odds ratio [OR] for BMI 0.830, 95% confidence interval [CI] 0.764–0.902), whereas achieving >25% TWL was not affected by sex or BMI (OR for BMI 1.010, 95% CI 0.957–1.065). External validation of the prediction models showed an acceptable range of accuracy (adjusted R 2 66.5–71.3%).
Conclusion
LSG and LRYGB are feasible and effective bariatric procedures for SWL in Korean patients with morbid obesity. The TWL model was a more appropriate criterion than EWL, and weight loss prediction models may help assess the 1-year outcomes of bariatric surgery.
