Zong Jie Koh1, Bee Choo Tai2, Lilian Kow3, James Toouli3, Muffazal Lakdawala4, Tarik Delko5, Marko Kraljević5, Chih-Kun Huang6, Praveen Raj7, Anton Cheng8, Jaideepraj Rao9, Alvin Eng10, Nik Ritza Kosai11, Reynu Rajan11, Guo Wei Kim12, Sang-Moon Han13, Jimmy Bok Yan So12, Kazunori Kasama14, Wei-Jei Lee15, Yong Jin Kim16, Simon Kin Hung Wong17, Sayeed Ikramuddin18, Asim Shabbir12. 1. Division of General Surgery, National University Health System, 1E, Kent Ridge Road, Singapore, 119228, Singapore. zong_jie_koh@nuhs.edu.sg. 2. Epidemiology and Public Health, Saw Swee Hock School of Public Health, National University of Singapore, 12 Science Drive 2, #10-01, Singapore, 117549, Singapore. 3. Bariatric Surgery, Flinders Medical Centre, Flinders University, GPO Box 2100, Adelaide, South Australia, 5001, Australia. 4. Bariatric Surgery, Digestive Health Institute, #L301, 3rd Floor, Trade View, Oasis City, Gate No. 4, Pandurang Budhkar Marg, Worli, Mumbai, 400013, India. 5. General Surgery, Clarunis University Center for Gastrointestinal and Liver Diseases Basel, Basel, Switzerland. 6. General Surgery, China Medical University Hospital, No. 2, Yude Road, North District, 404, Taichung City, Taiwan. 7. General Surgery, GEM Hospital and Research Center, 45, Pankaja Mill Rd, Coimbatore, 641045, India. 8. General Surgery, Khoo Teck Puat Hospital, 90 Yishun Central, Singapore, 768828, Singapore. 9. General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore. 10. General Surgery, Singapore General Hospital, Outram Road, Singapore, 169608, Singapore. 11. Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Batu 9 Cheras, Wilayah Persekutuan, 56000, Kuala Lumpur, Malaysia. 12. Division of General Surgery, National University Health System, 1E, Kent Ridge Road, Singapore, 119228, Singapore. 13. General Surgery, Gangnam CHA General Hospital, 569, Nonhyon-ro, Gangnam-gu, Seoul, 135-081, South Korea. 14. General Surgery, Yotsuya Medical Cube, 7-7 Nibanchō, Chiyoda-ku, Tokyo, 102-0084, Japan. 15. General Surgery, Min-Sheng General Hospital, #168 Jin-Kuo Rd, 330, Taoyuan City, Taiwan, Republic of China. 16. General Surgery, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Hannam-dong, Yongsan-gu, Seoul, South Korea. 17. General Surgery, Institute of Digestive Disease, The Chinese University of Hong Kong, Room 94020, 7/F, Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, Shatin, NT, Hong Kong. 18. General Surgery, GI/Bariatric Surgery, University of Minnesota, 420 Delaware St SE, MMC 195, Minneapolis, MN, 55455, USA.
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.
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.
Entities:
Keywords:
Asian ethnicity; Bariatric surgery; Obesity; Sleeve gastrectomy; Weight loss outcomes
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