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Influence of Asian Ethnicities on Short- and Mid-term Outcomes Following Laparoscopic Sleeve Gastrectomy

  • Zong Jie KohEmail author
  • Bee Choo Tai
  • Lilian Kow
  • James Toouli
  • Muffazal Lakdawala
  • Tarik Delko
  • Marko Kraljević
  • Chih-Kun Huang
  • Praveen Raj
  • Anton Cheng
  • Jaideepraj Rao
  • Alvin Eng
  • Nik Ritza Kosai
  • Reynu Rajan
  • Guo Wei Kim
  • Sang-Moon Han
  • Jimmy Bok Yan So
  • Kazunori Kasama
  • Wei-Jei Lee
  • Yong Jin Kim
  • Simon Kin Hung Wong
  • Sayeed Ikramuddin
  • Asim Shabbir
Original Contributions

Abstract

Purpose

Prevalence of obesity in Asia has been on the increasing trend, with corresponding increase in utilisation of bariatric surgery. The objective of this study was to examine differences in weight loss outcomes following bariatric surgery between Asian ethnicities.

Materials and Methods

A retrospective database review was conducted of patients undergoing primary laparoscopic sleeve gastrectomy between 2009 and 2013 in 14 centres from Singapore, Malaysia, Taiwan, Hong Kong, Japan, Korea, India, Australia, Switzerland, and the USA. All patients with available follow-up data at 12 months and 36 months post-surgery were included in this study. Outcome measures used were percentage excess weight loss (%EWL) and percentage total weight loss (%TWL). Differences in outcomes between ethnicities were analysed after adjusting for age, gender, baseline body mass index (BMI), and presence of diabetes.

Results

The study population (n = 2150) consisted of 1122 Chinese, 187 Malays, 309 Indians, 67 Japanese, 259 Koreans, and 206 Caucasians. 67.1% were female and 32.9% were male. Mean age was 37.1 ± 11.2 years. Mean pre-operative BMI was 40.7 ± 8.1 kg/m2. With the Caucasian population as reference, Japanese had the best %TWL (3.90, 95% CI 1.16–6.63, p < 0.05) and %EWL (18.55, 95% CI 10.33–26.77, p < 0.05) while the Malays had the worst outcomes. Both Chinese and Koreans had better %EWL but worse %TWL as compared to Caucasians and there were no significant differences with the Indian study group.

Conclusion

There are differences in weight loss outcomes following bariatric surgery between Asian ethnicities.

Keywords

Bariatric surgery Asian ethnicity Obesity Sleeve gastrectomy Weight loss outcomes 

Notes

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interests.

Statement of Informed Consent

No formal consent was required as this was a retrospective study.

A Statement of Human and Animal Rights

This study has been approved by the Institutional Review Board of each institution and all procedures were conducted in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Zong Jie Koh
    • 1
    Email author
  • Bee Choo Tai
    • 2
  • Lilian Kow
    • 3
  • James Toouli
    • 3
  • Muffazal Lakdawala
    • 4
  • Tarik Delko
    • 5
  • Marko Kraljević
    • 5
  • Chih-Kun Huang
    • 6
  • Praveen Raj
    • 7
  • Anton Cheng
    • 8
  • Jaideepraj Rao
    • 9
  • Alvin Eng
    • 10
  • Nik Ritza Kosai
    • 11
  • Reynu Rajan
    • 11
  • Guo Wei Kim
    • 1
  • Sang-Moon Han
    • 12
  • Jimmy Bok Yan So
    • 1
  • Kazunori Kasama
    • 13
  • Wei-Jei Lee
    • 14
  • Yong Jin Kim
    • 15
  • Simon Kin Hung Wong
    • 16
  • Sayeed Ikramuddin
    • 17
  • Asim Shabbir
    • 1
  1. 1.Division of General SurgeryNational University Health SystemSingaporeSingapore
  2. 2.Epidemiology and Public HealthSaw Swee Hock School of Public Health, National University of SingaporeSingaporeSingapore
  3. 3.Bariatric SurgeryFlinders Medical Centre, Flinders UniversityAdelaideAustralia
  4. 4.Bariatric SurgeryDigestive Health InstituteMumbaiIndia
  5. 5.General SurgeryClarunis University Center for Gastrointestinal and Liver Diseases BaselBaselSwitzerland
  6. 6.General SurgeryChina Medical University HospitalTaichung CityTaiwan
  7. 7.General SurgeryGEM Hospital and Research CenterCoimbatoreIndia
  8. 8.General SurgeryKhoo Teck Puat HospitalSingaporeSingapore
  9. 9.General SurgeryTan Tock Seng HospitalSingaporeSingapore
  10. 10.General SurgerySingapore General HospitalSingaporeSingapore
  11. 11.Department of SurgeryUniversiti Kebangsaan Malaysia Medical Centre, Faculty of Medicine, Universiti Kebangsaan MalaysiaKuala LumpurMalaysia
  12. 12.General SurgeryGangnam CHA General HospitalSeoulSouth Korea
  13. 13.General SurgeryYotsuya Medical CubeTokyoJapan
  14. 14.General SurgeryMin-Sheng General HospitalTaoyuan CityTaiwan, Republic of China
  15. 15.General SurgerySoonchunhyang University Seoul HospitalSeoulSouth Korea
  16. 16.General Surgery, Institute of Digestive DiseaseThe Chinese University of Hong KongShatinHong Kong
  17. 17.General Surgery, GI/Bariatric SurgeryUniversity of MinnesotaMinneapolisUSA

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