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Surg Obes Relat Dis. 2014 May-Jun;10(3):516-23. doi: 10.1016/j.soard.2014.02.040. Epub 2014 Mar 12.

Patient expectations of bariatric surgery are gender specific--a prospective, multicenter cohort study.

Author information

  • 1Department of Surgery, University of Heidelberg, Heidelberg, Germany. Electronic address:
  • 2Department of Surgery, University of Heidelberg, Heidelberg, Germany.
  • 3Obesity Clinic, Schoen Klinik Hamburg Eilbek, Hamburg, Germany.
  • 4Department of General and Visceral Surgery, Städtisches Klinikum Karlsruhe, Karlsruhe, Germany.
  • 5Institute for Medical Biometry and Informatics, Heidelberg, Germany.
  • 6Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway.



The effect of bariatric surgery on weight loss and improvement of co-morbidities is no longer doubted. However, little attention has been given to the treatment goals from the patient's point of view (patient expectations). The objective of this study was to examine patients' expectations of bariatric surgery and identify gender differences.


Bariatric patients were asked to complete a questionnaire. Statistical analysis was performed using chi-square, Pearson correlation coefficient, and Wilcoxon rank sum test.


Overall, 248 patients participated in this study (69.4% females). The male patients (45.2 yr, SD±11.1) were significantly older than the female (41.8 yr, SD±12.0; P = .04) and suffered significantly more often from diabetes, hypertension, hypercholesterolemia, and sleep apnea. One hundred thirty patients (52.4%) expected to lose at least 45 kg and 39 patients (15.7%)>70 kg. The mean expected excess weight loss was 71.8%. Females expected significantly more often that surgery alone would induce weight loss (P = .03). "Improved co-morbidity" was by far the highest ranked parameter.


The male bariatric surgery patients were older and suffered from more co-morbidities. Most of the patients had unrealistic weight loss goals and overestimated the effect of the surgical intervention. However, for both female and male patients, "improved co-morbidity" was the most important issue.

Copyright © 2014 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.


Bariatric surgery; Co-morbidity; Gender differences; Patient expectations; Weight loss goals

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