Validation of Predictive Equations for Estimating Lean Soft Tissue and Fat-Free Mass in Class II–V Obesity: A Multicenter Observational Study with Implications for Bariatric Surgery Monitoring

Key Points

• This research aims to assess the accuracy of predictive equations for estimating lean soft tissue and fat-free mass in individuals with obesity.
• Conducted a multicenter observational study
• Analyzed agreement of predictive equations with DXA measurements
• Evaluated performance at group and individual levels.
• Predictive equations showed acceptable agreement with DXA at the group level
• Performance varied significantly at the individual level
• Findings suggest a need for more precise predictive models.