Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data

IntroductionLifestyle changes including COVID-19 lockdown cause weight gain and may change obesity trends; however, timely changes are largely unknown and monitoring measures are usually lack. This first large-scale study aimed to analyze the real-world national trends of obesity prevalence of Chine...

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Main Authors: Yan Yang, Miao Zhang, Jian Yu, Zhou Pei, Chengjun Sun, Jingwei He, Tian Qian, Feihong Luo, Shaoyan Zhang, Zhenran Xu
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-05-01
Series:Frontiers in Endocrinology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fendo.2022.859245/full
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author Yan Yang
Miao Zhang
Jian Yu
Zhou Pei
Chengjun Sun
Jingwei He
Tian Qian
Feihong Luo
Shaoyan Zhang
Zhenran Xu
author_facet Yan Yang
Miao Zhang
Jian Yu
Zhou Pei
Chengjun Sun
Jingwei He
Tian Qian
Feihong Luo
Shaoyan Zhang
Zhenran Xu
author_sort Yan Yang
collection DOAJ
description IntroductionLifestyle changes including COVID-19 lockdown cause weight gain and may change obesity trends; however, timely changes are largely unknown and monitoring measures are usually lack. This first large-scale study aimed to analyze the real-world national trends of obesity prevalence of Chinese children in the past five years, and the impact of COVID-19 pandemic on pediatric obesity development through both mobile- and hospital-based data.MethodsThis study included children aged 3 to 19 years old all over China from January 2017 to April 2021. Hospital-measured and parent-reported cases from XIGAO database were analyzed. Body mass index (BMI) z-score calculation and obesity status evaluation were made according to Chinese standards. We evaluated obesity/overweight prevalence over the past five years and the changes of BMI z-score during COVID-19 lockdown.ResultsA total of 656396 children from 31 provinces were involved, including 447481 hospital-measured cases and 208915 parent-reported cases. The obesity and overweight prevalence were 8.05% (95%CI 7.76%–8.39%) and 10.06% (95%CI 10.79%–11.55%), comparable to those of China National Nutrition Surveys during 2015–2019. Northern China had the highest obesity prevalence. Parent-reported data had higher obesity/overweight prevalence than hospital-measured data (18.3% [95%CI 17.7%–18.9%] vs. 21.7% [95%CI 20.7%–23.0%]). The trend of obesity prevalence remained stable with slight decrease, but COVID-19 lockdown caused a significant increase of 1.86% in 2020. Both mobile- and hospital-based data showed weight gain in the first half of 2020. High BMI z-score increase were found among primary and junior middle school children, and children in northeast area during lockdown.ConclusionWeight gain during COVID-19 among Chinese children had regional differences and mainly affect primary and junior middle school children, thus warrants targeted interventions. The mobile growth assessment based on parent-reported data was a feasible, efficient and timely way for obesity monitoring among Chinese children, especially during epidemic.
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spelling doaj.art-fc0f4570c16644d78911104c48272dbb2022-12-22T00:31:00ZengFrontiers Media S.A.Frontiers in Endocrinology1664-23922022-05-011310.3389/fendo.2022.859245859245Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based DataYan Yang0Miao Zhang1Jian Yu2Zhou Pei3Chengjun Sun4Jingwei He5Tian Qian6Feihong Luo7Shaoyan Zhang8Zhenran Xu9Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaShijiazhuang Xigao Technology Co. Ltd., Shijiazhuang City, ChinaDepartment of Integrative Medicine, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaDepartment of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaDepartment of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaDepartment of Integrative Medicine, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaDepartment of Clinical Nutrition, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaDepartment of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaShijiazhuang Xigao Technology Co. Ltd., Shijiazhuang City, ChinaDepartment of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, ChinaIntroductionLifestyle changes including COVID-19 lockdown cause weight gain and may change obesity trends; however, timely changes are largely unknown and monitoring measures are usually lack. This first large-scale study aimed to analyze the real-world national trends of obesity prevalence of Chinese children in the past five years, and the impact of COVID-19 pandemic on pediatric obesity development through both mobile- and hospital-based data.MethodsThis study included children aged 3 to 19 years old all over China from January 2017 to April 2021. Hospital-measured and parent-reported cases from XIGAO database were analyzed. Body mass index (BMI) z-score calculation and obesity status evaluation were made according to Chinese standards. We evaluated obesity/overweight prevalence over the past five years and the changes of BMI z-score during COVID-19 lockdown.ResultsA total of 656396 children from 31 provinces were involved, including 447481 hospital-measured cases and 208915 parent-reported cases. The obesity and overweight prevalence were 8.05% (95%CI 7.76%–8.39%) and 10.06% (95%CI 10.79%–11.55%), comparable to those of China National Nutrition Surveys during 2015–2019. Northern China had the highest obesity prevalence. Parent-reported data had higher obesity/overweight prevalence than hospital-measured data (18.3% [95%CI 17.7%–18.9%] vs. 21.7% [95%CI 20.7%–23.0%]). The trend of obesity prevalence remained stable with slight decrease, but COVID-19 lockdown caused a significant increase of 1.86% in 2020. Both mobile- and hospital-based data showed weight gain in the first half of 2020. High BMI z-score increase were found among primary and junior middle school children, and children in northeast area during lockdown.ConclusionWeight gain during COVID-19 among Chinese children had regional differences and mainly affect primary and junior middle school children, thus warrants targeted interventions. The mobile growth assessment based on parent-reported data was a feasible, efficient and timely way for obesity monitoring among Chinese children, especially during epidemic.https://www.frontiersin.org/articles/10.3389/fendo.2022.859245/fullpediatric obesitybody mass indexchildrenadolescentChina
spellingShingle Yan Yang
Miao Zhang
Jian Yu
Zhou Pei
Chengjun Sun
Jingwei He
Tian Qian
Feihong Luo
Shaoyan Zhang
Zhenran Xu
Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data
Frontiers in Endocrinology
pediatric obesity
body mass index
children
adolescent
China
title Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data
title_full Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data
title_fullStr Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data
title_full_unstemmed Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data
title_short Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data
title_sort nationwide trends of pediatric obesity and bmi z score from 2017 2021 in china comparable findings from real world mobile and hospital based data
topic pediatric obesity
body mass index
children
adolescent
China
url https://www.frontiersin.org/articles/10.3389/fendo.2022.859245/full
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