Background: The aim of our study was to determine the optimization of the change in epicardial fat thickness in obese patients who underwent bariatric surgery with Central Composite (CCD) and Box-Behnken Experimental design (BBD).
Methods: Response Surface Methods are used to see the sensitivity of the assessment criterion to changes in design variables, and even to obtain the necessary correlations experimentally. Response surface methods are evaluated in two different ways as CCD and BBD design. In this study, 33 experimental designs were designed. The study data consisted of 40 obese patients who lost weight by bariatric surgery between February 2015 and December 2016. Body Mass Index (BMI), Age and HOMA values were evaluated in 3 categories and 3 levels, and response variable was the change in Epicardial Fat Thickness (ΔEFT).
Results: As a result of CCD analysis, Age = 30.52, BMI = 45.30, HOMA = 34.62, the optimum ΔEFT = 2.571. As a result of BBD analysis, Age = 38.36, BMI = 63.18, HOMA = 14.95, the optimum ΔEFT = 3.756. Optimum ΔEFT is modeled with Contour and Response surface graphics.
Conclusion: According to the results of the analysis, it was found that BBD analysis for optimum ΔEFT was more positive than CCD and optimum age, BMI and HOMA combinations were determined to reach maximum ΔEFT.