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Minimal important difference in weight loss following bariatric surgery: Enhancing BODY-Q interpretability
Farima Dalaei1,2,3, Phillip J Dijkhorst4, Sören Möller3,5
1Research Unit of Plastic Surgery, Odense University Hospital, Odense, Denmark.
Clinical Obesity
|May 22, 2024
Summary
This study determined the minimal important difference (MID) for the BODY-Q, a tool assessing bariatric surgery outcomes. The findings provide guidance for interpreting patient-reported outcomes in bariatric surgery, enhancing clinical utility.
Area of Science:
- Bariatric Surgery Outcomes Research
- Patient-Reported Outcome Measures (PROMs)
- Clinical Utility Assessment
Background:
- The BODY-Q is a patient-reported outcome measure crucial for assessing bariatric surgery outcomes.
- Interpreting BODY-Q scores is challenging due to a lack of established guidance.
- This limits its clinical utility in evaluating treatment effectiveness.
Purpose of the Study:
- To establish the minimal important difference (MID) for the BODY-Q.
- To provide benchmarks for interpreting score changes in bariatric surgery patients.
- To enhance the clinical application of the BODY-Q.
Main Methods:
- Prospective collection of BODY-Q data from bariatric surgery patients in Denmark and the Netherlands.
- Utilized two distribution-based methods to estimate MID: 0.2 standard deviations of baseline scores and mean standardized response change.
- Analyzed data from 2253 participants (5476 assessments) across various bariatric procedures.
Main Results:
- Estimated MID for health-related quality of life (HRQL) ranged from 1 to 4 at baseline.
- Estimated MID for appearance scales ranged from 2 to 8 at baseline.
- Recommended MID for change in BODY-Q HRQL and appearance scales is 3 to 8, aiding interpretation of treatment effects.
Conclusions:
- The study successfully determined MID values for the BODY-Q.
- These MID values offer crucial guidance for interpreting BODY-Q scores post-bariatric surgery.
- The findings are recommended for assessing treatment effects and improving clinical decision-making.
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