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Background Since the reform and opening up in China, socio-economic development has developed rapidly, and the basic indicators such as children's height and body mass have risen rapidly. Previous studies have shown that the growth in height of Chinese children has slowed in recent years, while the growth in body mass has accelerated, leading to a high prevalence of overweight and obesity currently. Investigating the current growth and nutritional status of Chinese children is important to prevent and address the negative effects of growth trends. Objective To analyse the trends of growth and overweight/obesity in Chinese children aged 7 to 12 years from 2014 to 2020, and provide a scientific basis for formulating measures to promote children's physical fitness and prevent obesity. Methods In this study, height, body mass and BMI data of 10 817 children aged 7 to 12 years from four surveys of the China Family Panel Studies (CFPS) in 2014, 2016, 2018 and 2020 were selected in May 2022. The trends of height, body mass, prevalence of overweight, obesity and overweight/obesity stratified by gender and urban/rural areas. Logistic regression analysis was also used to explore the factors influencing overweight and obesity among children aged 7 to 12 years in China from 2014 to 2020. Results Compared with 2014, the height of 7 to 12 years urban female children, rural male children and rural female children in 2020 increased by 3.8 cm (95%CI=1.3-6.2 cm), 6.5 cm (95%CI=4.3-8.5 cm), 6.6 cm (95%CI=4.3-8.8 cm) respectively Compared with 2014, the body mass of 7 to 12 years urban male children, urban female children, rural male children and rural female children in 2020 increased by 2.3 kg (95%CI=0.8-3.9 kg), 2.1 kg (95%CI=0.6-3.7 kg), 3.0 kg (95%CI=1.7-4.2 kg), 3.0 kg (95%CI=1.8-4.2 kg), respectively, the difference was statistically significant (P |
