Baseline characteristics analysis of the Beijing Children and Adolescents Natural Population Cohort
Objective To establish the Beijing Children and Adolescents Health Cohort and report on its research protocol and baseline population characteristics,in order to provide reference for in-depth studies on factors influencing obesity,myopia,and other chronic diseases in children and adolescents.Methods From 2022 to 2023,the Beijing Children and Adolescents Health Cohort was launched in a district of Beijing,including 10 representative primary and secondary schools.The baseline survey consisted of two parts:A questionnaire and a health examination.The questionnaire covered personal and family medical history,diet,exercise,sleep,and other behavioral and lifestyle habits.The health examination involved physical measurements,internal and external medical examinations,body composition analysis,bone mineral density and bone age assessment,abdominal ultrasound,optometric tests,and venous blood sample collection for biochemical and routine blood tests.Results The cohort included 5 579 children and adolescents aged 6 to 18 years,with an average age of 10.6 years.A higher proportion of participants were in the 6-11 and 12-14 age groups.Self-reported smoking and drinking initiation rates were 0.8%and 4.9%,respectively,with a daily secondhand smoke exposure rate of 7.8%.The rate of poor vision was 57.6%.The prevalence for underweight,overweight,and obesity were 6.5%,16.0%,and 25.2%,respectively,with a prevalence rate of abdominal obesity of 35.9%.The prevalence rates of dyslipidemia,elevated blood pressure,impaired fasting glucose,and fatty liver were 23.7%,16.8%,4.0%,and 11.3%,respectively.Conclusions The baseline data of the Beijing Children and Adolescents Health Cohort indicate a high detection rate of myopia,obesity,and related chronic metabolic diseases,which should be given serious attention.Comprehensive intervention strategies and evaluations of intervention effects need to be actively promoted.
children and adolescentsobesitypoor visionmetabolic disorderscohort study