Excessive screen time in preschool children in China:a meta-analysis
Objective To systematically review status of excessive screen time in preschool children in Chi-na.Methods Cross sectional studies on the incidence of excessive screen time among Chinese preschool children published in CNKI,VIP,Wanfang data,CBM,PubMed,Cochrane,Embase,CINAHL and Web of Science databases were re-trieved by computer.The retrieval time was from the establishment of the database to October 18,2022.Two researchers in-dependently screened and extracted the data,evaluated the literature quality,and performed meta analysis using Stata16.0 software.Results A total of 28 articles were included,including 143,483 preschool children.The results of meta-analysis showed that the excessive screen time rate of Chinese preschool children was 46.4％,and the average daily screen time was 1.86 hours.The results of subgroup analysis showed that the excessive screen time rates were 48.5％for boys and 45.6％for girls.The different rates from 3 to 6 years old were 40.9％,45.8％,45.4％,44.4％,respectively.The rate in only-one-child families was 47.9％and 53.8％in other families.The rates in father or mother with junior high school or lower educa-tion level were 49.7％and 49.9％.The rates in father or mother with high school education level were 46.5％and 44.4％.The rates in father or mother with university or higher education level were 41.8％and 42.4％.The rate in study days was 35.3％and 43.7％in weekends.The rate before 2019 was 43.2％and 46.2％after 2019.The rates in eastern China,cen-tral China and western China were 49.7％,39.4％and 39.3％.Conclusions It is showed that the excessive screen time rate of preschool children in China is relatively high.Boys,older children,non only-one-child family,parents with lower education,eastern regions have higher incidence rate.Therefore,targeted prevention and intervention should be carried out.Limited by the quantity and quality of included studies,the above conclusions need more high-quality studies to verify.
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