Abstract
Objective To investigate screen time status 3 to 6 years old preschool students in Yangzhou,and to describe the risk factors of screen time >2 hours.Methods A total of 2 531 children were selected from 7 kindergartens with clustering sampling and surveyed with a questionnaire and physical examination.Screen time status and family factors were investigated by using questionnaires.The family factors included the parents' age,education,health,family structure,birth outcomes,etc.Results The prevalence rate of screen time >2 hours from Monday to Friday per day was 19.3%,Saturday to Sunday per day was 39.3%,per day for one week was 28.2%.Children in the 3 age group,normal weight group,parent ≥35 age group,BMI 18.5-23.9 kg/m2 group,bachelor degree and above group,only child group were used as reference groups for the logistic regression model.Mother recent BMI ≥24 kg/m2(OR=1.33,95%CI=1.01-1.75) and below bachelor degree(OR=2.15,95%CI=1.67-2.77) were the risk factors of screen time >2 hours per day from Monday to Friday.Children at age 4 to 6(OR=1.53,95%CI=1.20-1.95;OR =1.88,95%CI=1.49-2.40;OR =1.95,95% CI=1.48-2.56),obesity(OR =1.34,95% CI =1.07-1.67),father's age below 35(OR=1.30,95%CI=1.05-1.61),mother recent BMI≥24(OR=1.32,95%CI=1.04~ 1.67),parent education level below bachelor degree (OR =1.37,95% CI =1.12-1.68;OR =1.90,95% CI =1.56-2.33),non-only child (OR =1.32,95%CI=1.06-1.64) were the risk factors of screen time >2 hours per day from Saturday to Sunday.Children in the 5 age group(OR=1.29,95%CI=1.01-1.67),obesity(OR=1.32,95%CI=1.05-1.66),father's age below 35(OR=1.44,95%CI=1.15-1.81),mother recent BMI ≥ 24 kg/m2 (OR =1.43,95 % CI =1.12-1.83),parent education level below bachelor degree (OR=1.27,95%CI=1.03-1.57;OR=2.10,95%CI=1.67-2.60) were the risk factors of screen time >2 hours per day for one week.Conclusion Children's age,obesity,father's age,mother recent BMI,parent education level,non-single child are the important factors associated with Yangzhou preschool screen time.
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