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Background  : Recent overweight and obesity prevalence data are lacking for China. Methods  : Data were from provincially representative surveys conducted in 2013 and 2018 in Hunan Province, China. Overweight and obesity were defined according to the Chinese standard. Complex sampling weights were considered in statistical analyses. 95% confidence interval (95% CI) of rate was calculated. Results  : The overall prevalence rate between 2013 and 2018 significantly increased from 20.81% (95% CI: 17.68-23.95) to 26.97% (95% CI: 23.48-30.45) for overweight and from 4.09% (95% CI: 3.21-4.96) to 7.13% (95% CI: 5.10-9.15) for obesity in Hunan Province of China, respectively. Urban residents and males had higher crude prevalence rates of overweight and obesity than rural residents and females in 2013 and in 2018. Notably, the peak age groups of overweight and obesity both became younger between 2013 and 2018. After controlling for Engel coefficient, level of education and frequency of physical exercise per week, the overweight prevalence significantly increased in urban males aged 65+ (adjusted OR: 1.52) and rural males aged 45-54 years (adjusted OR: 1.52) and 65+ (adjusted OR: 1.88) and the obesity prevalence rate rose significantly in many groups (urban males: 18-24 years, 25-34 years, 35-44 years and 55-64 years; urban females: 25-34 years, 35-44 years, 45-54 years; rural males: 18-24 years, 25-34 years; rural females: 35-44 years, 55-64 years), with adjusted OR varying from 1.56 to 5.52. C onclusion  : The adult prevalence rates of overweight and obesity significantly increased between 2013 and 2018 in Hunan Province, China. The increasing prevalence rates and varying prevalence changes across groups warrantee further research and policy interventions.

Prevalence of Overweight and Obesity among People Aged 18 Years and Over between 2013 and 2018 in Hunan, China