Related Experiment Video
Updated: Mar 9, 2026
Control of Eating Behavior Using a Novel Feedback System
Published on: May 8, 2018
Post-implant Analysis of Epidemiologic and Eating Behavior Data Related to Weight Loss Effectiveness in Obese
I Alarcón Del Agua1, M Socas-Macias2, L Busetto3
1Innovation and Minimal Invasive Surgery Unit, Virgen del Rocío, Hospital Virgen del Rocio, Avda Manuel Siurot, S/N, 41010, Sevilla, Spain. isaiasalarcon@gmail.com.
Objective:
To determine possible preoperative predictors for obtaining clinically meaningful weight loss with gastric electrical stimulation (GES) using the "Three-Factor Eating Questionnaire" (TFEQ) as well as epidemiological data.
Methods:
Ninety-seven obese participants in a prospective multicenter randomized study conducted in nine European centers were implanted laparoscopically with the abiliti® closed-loop GES system (CLGES). Five clinical variables and three preoperative TFEQ factor scores (F1-cognitive-restraint, F2-disinhibition, and F3-hunger) were analyzed in order to determine predictors of weight loss success defined as excess weight loss (EWL) > 30% and failure defined as EWL < 20% at 12 months post-surgery.
Results:
The mean 12-month %EWL with CLGES was 35.1 ± 19.7%, with a success rate of 52% and a failure rate of 19%. Significant predictors of success were body mass index (BMI) < 40 kg/m2 and age ≥ 50 years, increasing probability of success by 22 and 29%, respectively. A low F1-cognitive-restraint score was a significant predictor of failure (p = 0.004). The best predictive model for success included F1-cognitive-restraint, F2-disinhibition, BMI < 40, and age ≥ 50 (p = 0.002).
Conclusion:
This retrospective analysis has shown that age, preoperative BMI, and F1-cognitive-restraint and F2-disinhibition scores from a preoperatively administered TFEQ are predictive of weight loss outcomes with CLGES and may be used for patient selection.
Trial Registration:
ClinicalTrials.gov Identifier: NCT01448785.
