Journal of Minimally Invasive Surgical Sciences

Published by: Kowsar

Observational Studies in Bariatric Surgery

Fatemeh Sadat Hosseini-Baharanchi 1 , *
Author Information
1 Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
Article information
  • Journal of Minimally Invasive Surgical Sciences: February 2018, 7 (1); e68050
  • Published Online: February 28, 2018
  • Article Type: Review Article
  • Received: January 3, 2018
  • Revised: February 2, 2018
  • Accepted: February 25, 2018
  • DOI: 10.5812/minsurgery.68050

To Cite: Hosseini-Baharanchi F S. Observational Studies in Bariatric Surgery, J Minim Invasive Surg Sci. 2018 ; 7(1):e68050. doi: 10.5812/minsurgery.68050.

Copyright © 2018, Journal of Minimally Invasive Surgical Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License ( which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited
1. Introduction
2. Case Report and Case Series
3. Discussion
  • 1. Machin D, Fayers PM. Randomized clinical trials: design, practice and reporting. John Wiley & Sons; 2010. doi: 10.1002/9780470686232.
  • 2. Mingrone G, Panunzi S, De Gaetano A, Guidone C, Iaconelli A, Nanni G, et al. Bariatric-metabolic surgery versus conventional medical treatment in obese patients with type 2 diabetes: 5 year follow-up of an open-label, single-centre, randomised controlled trial. Lancet. 2015;386(9997):964-73. doi: 10.1016/S0140-6736(15)00075-6. [PubMed: 26369473].
  • 3. Martins Tde C, Duarte TC, Mosca ER, Pinheiro Cde F, Marcola MA, De-Souza DA. Severe protein malnutrition in a morbidly obese patient after bariatric surgery. Nutrition. 2015;31(3):535-8. doi: 10.1016/j.nut.2014.10.011. [PubMed: 25701346].
  • 4. Dekkers OM, Egger M, Altman DG, Vandenbroucke JP. Distinguishing case series from cohort studies. Ann Intern Med. 2012;156(1 Pt 1):37-40. doi: 10.7326/0003-4819-156-1-201201030-00006. [PubMed: 22213493].
  • 5. Rosenbaum PR. Observational Studies. Springer; 2002. doi: 10.1007/978-1-4757-3692-2_1.
  • 6. Van Looveren R, Mandeville Y, Logghe P, Vandendriessche K, Verbeke X, Vuylsteke P, et al. The Effect of Dumping on Weight Loss in Conversion of Failed Restrictive Surgery: a Cross-Sectional Pilot Study. Obes Surg. 2018;28(3):665-70. doi: 10.1007/s11695-017-2906-0. [PubMed: 28933032].
  • 7. Grimes DA, Schulz KF. Cohort studies: marching towards outcomes. Lancet. 2002;359(9303):341-5. doi: 10.1016/S0140-6736(02)07500-1. [PubMed: 11830217].
  • 8. Petersen I, Douglas I, Whitaker H. Self controlled case series methods: an alternative to standard epidemiological study designs. BMJ. 2016;354. i4515. doi: 10.1136/bmj.i4515. [PubMed: 27618829].
  • 9. Tsamalaidze L, Stauffer JA, Arasi LC, Villacreses DE, Franco JSS, Bowers S, et al. Laparoscopic Sleeve Gastrectomy for Morbid Obesity in Patients After Orthotopic Liver Transplant: a Matched Case-Control Study. Obes Surg. 2018;28(2):444-50. doi: 10.1007/s11695-017-2847-7. [PubMed: 28766265].
  • 10. Schulz KF, Grimes DA. Case-control studies: research in reverse. Lancet. 2002;359(9304):431-4. doi: 10.1016/S0140-6736(02)07605-5. [PubMed: 11844534].
  • 11. Castelli WP. Epidemiology of coronary heart disease: the Framingham study. Am J Med. 1984;76(2A):4-12. doi: 10.1016/0002-9343(84)90952-5. [PubMed: 6702862].
  • 12. Luyssen J, Jans G, Bogaerts A, Ceulemans D, Matthys C, Van der Schueren B, et al. Contraception, Menstruation, and Sexuality after Bariatric Surgery: a Prospective Cohort Study. Obes Surg. 2017. doi: 10.1007/s11695-017-3033-7. [PubMed: 29197048].
  • 13. Hedenbro JL, Naslund E, Boman L, Lundegardh G, Bylund A, Ekelund M, et al. Formation of the Scandinavian Obesity Surgery Registry, SOReg. Obes Surg. 2015;25(10):1893-900. doi: 10.1007/s11695-015-1619-5. [PubMed: 25703826].
  • 14. Torgerson JS, Sjostrom L. The Swedish Obese Subjects (SOS) study--rationale and results. Int J Obes Relat Metab Disord. 2001;25 Suppl 1:S2-4. doi: 10.1038/sj.ijo.0801687. [PubMed: 11466577].
  • 15. Minimally Invasive Surgery Research & Training Center of Excellence . Obesity Surgery. 2015. Available from:

Featured Image:

Creative Commons License Except where otherwise noted, this work is licensed under Creative Commons Attribution Non Commercial 4.0 International License .

Search Relations:



Create Citiation Alert
via Google Reader

Readers' Comments