Objective To investigate the correlation between screen time and hyperactivity index in infants,so as to provide clues for the impact of screen time on hyperactivity behavior in young children.Methods Totally 22 586 children in Longhua district of Shenzhen were enrolled in this study,and their parents were surveyed in September 2018.The general demographic variables and screen time were collected by a self-designed questionnaire.The hyperactivity index was investigated by Conners Parental Symptom Questionnaire(PSQ) to analyze the correlation between screen time and hyperactivity index in infants.Results The abnormal rate of hyperkinetic index was 1.7%.Screen time for TV sets and new electronic products in infants increased with age,which was significantly related to abnormal results of hyperactivity index in children under 1 year old,1-to 2-year-old children,and 2-to 3-year-old children,and the risk was higher in younger children.The longer the daily screen time in children under 3 years old,the higher the risk of abnormal hyperactivity index would be.Compared with the non-screen group,TV screen time≥1 h/d (OR=5.36,95%CI:3.27-8.78) and ＜1 h/d (OR=2.06,95%CI:1.24-3.42) were risk factors for abnormal hyperactivity index,and the corresponding OR value in new electronic products was 5.94(95%CI:3.79-9.30) and 2.25(95%CI:1.48-3.41),respectively.The longer the single screen time,the higher the risk of abnormal hyperactivity index would be.Compared with screen time＜15 min,the OR value (95%CI) for abnormal hyperactivity index in single screen time ≥120,60-120,30-60,15-30 min was 3.13 (1.33-7.37),2.81 (1.83-4.31),1.46 (1.05-2.04),and 1.23 (0.92-1.64),respectively.Conclusions Early exposure to screen and excessive screen time in infant stage may be correlated with abnormal hyperactivity index.It is recommended that children under 2 years old should not screen every day,and the total screen time should be controlled less than 0.5 hour in 2-to 3-year-old children.
Key words
screen time /
hyperkinetic index /
infants and toddlers
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