关键词: 视屏暴露, 语言发育, 儿童

Abstract: Objective To explore the effect of early screen exposure on language development in children,so as to provide reference for the prevention of language development retardation in children. Methods In this study,a case-control study was conducted to evaluate the development of 54 children with language retardation in the case group and 56 children with typical development in the control group by Gesell Scale from January to December 2019. All participants were from 1 to 5 years old. The main caregivers of the children were investigated by a self-designed questionnaire to know about the early screen exposure. Results The proportion and duration of exposure to mobile phone/iPad in the control group was higher than those of exposure to TV. The proportion of children exposed to mobile phone/iPad and TV in the case group accounted for 88.9% and 81.5%,significantly higher than those in the control group (71.4% and 57.1%,P<0.05). The exposure time of mobile phone/iPad and TV in the case group was 38.0(15.0,60.0)] min/d,35(17.0,55.0)min/d,significantly higher than those in the control group [25.0(10.0,45.0)min/d,20(8.0,40.0)min/d,Z=2.936,2.438,P<0.05]. Logistic regression analysis showed that children's mobile phone/iPad exposure time≥30 min/d was a risk factor for language development retardation (OR=2.431,95%CI:3.188-12.723,P＜0.01). Conclusions Early exposure to mobile phones/iPad is a risk factor for language development retardation. Therefore,children's screen time for mobile phones and other electronic devices should be strictly limited,and more parent-child interactions are encouraged in order to promote children's health.

Key words: screen exposure, language development, children