Comparison of race‐ and ethnicity‐specific BMI cutoffs for categorizing obesity severity: a multicountry prospective cohort study

Author:

Wang Sujing1,Shen Jie2,Koh Woon‐Puay3,Yuan Jian‐Min45,Gao Xiang6,Peng Yinshun6,Xu Yaqing1,Shi Shuxiao1,Huang Yue1,Dong Ying1,Zhong Victor W.1ORCID

Affiliation:

1. Department of Epidemiology and Biostatistics, School of Public Health Shanghai Jiao Tong University School of Medicine Shanghai China

2. Medical Records and Statistics Office Shanghai Sixth People's Hospital of Shanghai Jiao Tong University School of Medicine Shanghai China

3. Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine National University of Singapore Singapore

4. UPMC Hillman Cancer Center University of Pittsburgh Pittsburgh Pennsylvania USA

5. Department of Epidemiology, School of Public Health University of Pittsburgh Pittsburgh Pennsylvania USA

6. Department of Nutrition and Food Hygiene, School of Public Health, Institute of Nutrition Fudan University Shanghai China

Abstract

AbstractObjectiveThe objective of this study was to compare race‐ and ethnicity‐specific BMI cutoffs for the three classes of obesity based on equivalent risk of type 2 diabetes (T2D).MethodsParticipants without T2D were included from the UK Biobank, the China Health and Nutrition Survey, and the Singapore Chinese Health Study. Poisson regressions with restricted cubic splines were applied to determine BMI cutoffs for each non‐White race and ethnicity for equivalent incidence rates of T2D at BMI values of 30.0, 35.0, and 40.0 kg/m2 in White adults.ResultsDuring a median follow‐up of 13.8 years among 507,763 individuals, 5.2% developed T2D. In women, BMI cutoffs for an equivalent incidence rate of T2D as observed at 40.0 kg/m2 in White adults were 31.6 kg/m2 in Black, 29.2 kg/m2 in British Chinese, 27.3 kg/m2 in South Asian, 26.9 kg/m2 in Native Chinese, and 25.1 kg/m2 in Singapore Chinese adults. In men, the corresponding BMI cutoffs were 31.9 kg/m2 in Black, 30.6 kg/m2 in British Chinese, 29.0 kg/m2 in South Asian, 29.6 kg/m2 in Native Chinese, and 27.6 kg/m2 in Singapore Chinese adults. The race and ethnicity order was consistent when equivalent BMI cutoffs were estimated for class I and II obesity.ConclusionsEstablishing a race‐ and ethnicity‐tailored classification of the three classes of obesity is urgently needed.

Funder

National Natural Science Foundation of China

National Institutes of Health

National Medical Research Council

Shanghai Municipal Health Commission

Innovative Research Team of High-level Local University in Shanghai

National Key Research and Development Program of China

Publisher

Wiley

Reference42 articles.

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