title: Preoperative predictors of weight loss at 4 years following bariatric surgery.
abstract: BACKGROUND
  This study evaluated the influence of patient characteristics, preoperative weight loss, and type of surgical procedure on long-term weight loss after bariatric surgery (BS).
  
  
  METHODS
  Subjects were a prospective cohort of 95 patients who underwent BS with 4 years of follow-up. Seventy-seven patients (81.1%) underwent laparoscopic Roux-en-Y gastric bypass, and 18 (18.9%) had laparoscopic sleeve gastrectomy. Age, gender, initial body mass index (BMI), preoperative percentage of excess weight loss, presence of type 2 diabetes mellitus, current smoking status, and surgical technique were analyzed via multivariate linear regression analysis to identify predictors of weight loss during the 4 years after the surgery.
  
  
  RESULTS
  Maximum percentage of excess weight loss was obtained at 18 months. Age and preoperative BMI were negatively associated with percentage of excess weight loss at 1, 2, 3, and 4 years after BS (P < .005). At 4 years, laparoscopic Roux-en-Y gastric bypass was independently associated with a higher weight loss than laparoscopic sleeve gastrectomy (P < .05).
  
  
  CONCLUSIONS
  Younger age, lower BMI, and laparoscopic Roux-en-Y gastric bypass are independent predictors of long-term weight loss after BS.
authors: Department of Endocrinology and Nutrition, Parc de Salut Mar, Barcelona, Spain Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain CIBER Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, Spain Research Program in Dietetics and Nutrition (EEES H0502), University of Barcelona, Spain Alejandra.parri.bonet@gmail.com aparri@parcdesalutmar.cat.
authors: Alejandra
authors: A
authors: Parri
authors: Department of Endocrinology and Nutrition, Parc de Salut Mar, Barcelona, Spain Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain Department of Medicine, Universitat Autonoma de Barcelona, Spain.
authors: David
authors: D
authors: Benaiges
authors: Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain CIBER Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Spain.
authors: Helmut
authors: H
authors: Schröder
authors: CIBER Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, Spain Department of Nutrition and Food Science, School of Pharmacy, University of Barcelona, Barcelona, Spain.
authors: Maria
authors: M
authors: Izquierdo-Pulido
authors: Unit of Gastrointestinal Surgery, Parc de Salut Mar, IMIM-Hospital del mar, Medical Research Institute, Barcelona, Spain.
authors: José
authors: J
authors: Ramón
authors: Department of Endocrinology and Nutrition, Parc de Salut Mar, Barcelona, Spain Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain CIBER Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, Spain.
authors: Montserrat
authors: M
authors: Villatoro
authors: Department of Endocrinology and Nutrition, Parc de Salut Mar, Barcelona, Spain Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain CIBER Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, Spain Department of Medicine, Universitat Autonoma de Barcelona, Spain.
authors: Juana
authors: J
authors: Flores-Le Roux
authors: Department of Endocrinology and Nutrition, Parc de Salut Mar, Barcelona, Spain Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain CIBER Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, Spain Department of Medicine, Universitat Autonoma de Barcelona, Spain.
authors: Alberto
authors: A
authors: Goday
mesh_terms: D000328:Adult; D000367:Age Factors; D015992:Body Mass Index; D005260:Female; D005500:Follow-Up Studies; D015390:Gastric Bypass / Q000379:methods*; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011300:Preoperative Care; D011446:Prospective Studies; D015431:Weight Loss
keywords: bariatric surgery; obesity; weight loss