Abstract: Objective To explore the relationship between screen exposure and developmental behavior of 18 months old children,so as to provide evidence for reducing video exposure in infants. Methods From December 2016 to December 2017, a self-designed questionnaire was used to collect the screen exposure time of 18-month-old infants who underwent 4-2-1 physical examination, and the social demographic characteristics, screen exposure of parents and other information were also collected. ASQ-3 was used to test the communication, physical development and other abilities of infants. Results The average daily screen time was 40. 8 minutes, of which 172 (26. 1%) were more than one hour. Multivariate binary Logistic regression found that infants with screen time more than 1 hour per day had lower risk of severe and mild developmental delay in communication domain aged 18 months old[OR=1. 55(95%CI:1. 05-2. 28), OR=3. 57(95%CI:1. 49-8. 53), respectively], with statistically significant differences (P＜0. 05). Conclusions Longer screen exposure has a negative effect on children's communication development. Public awareness of the impacts of screen exposure in infants should be raised to reduce the occurrence of language retardation in children.

Key words: television, cognitive development, screen time, infants

摘要： 目的 分析婴幼儿视屏暴露与18月龄儿童发育行为的关联,为减少婴幼儿视屏暴露提供依据。 方法 2016年12月-2017年12月采用自制问卷对进行4-2-1体检的18月龄婴幼儿收集视屏暴露时间,同时收集其社会人口统计学特征、带养者视屏暴露等信息。采用年龄与发育进程问卷第3版(ASQ-3)评价婴幼儿的沟通、身体发育等能力。 结果 每天总的视屏时间平均为40.8 min,其中超过1 h者172人(占26.1%)。多因素二分类Logistic回归发现每天总视屏时间超过1 h的婴幼儿沟通能区发育低常和低下的发生风险分别为OR＝1.55(95%CI:1.05～2.28)和OR＝3.57(95%CI:1.49～8.53),差异有统计学意义(P＜0.05)。 结论 长时间的视屏暴露对儿童语言发育有消极影响,应该提高公众对婴幼儿视屏暴露危害的认识,减少儿童语言发育迟缓的发生。

关键词: 电视, 认知发育, 视屏时间, 婴幼儿