ABSTRACT
Objective@#To explore relationship between screen time and myopia in children aged 11-14 years in China.@*Methods@#The data were extracted from "National Nutrition and Health Systematic Survey and Application for 0-18 Years Old Children". A total of 12 397 children aged 11-14 years old from 14 provinces and 28 districts/counties in seven regions of China were surveyed by using multi stage stratified random sampling method. Daily screen time and visual acuity information were collected through a questionnaire.@*Results@#The myopia rate of 11-14 years old children in China was 45.0%, among which the rate of girls was higher than that of boys, and the rate of urban was higher than that of rural, and it increased with age ( χ 2=178.82,79.25, 495.96 , P <0.01). The daily screen time median of 12 397 children was 40.0 minutes, with boys(40.0 min) longer than girls( 35.0 min ) and urban children(40 min) longer than rural children(33.0 min) ( χ 2=20.86，102.68， P <0.01). The myopia rate of boys ( 42.5 %) with daily screen time greater than or equal to 60 minutes was higher than that of boys (36.4%) with daily screen time less than 60 minutes, and the myopia rate of girls (55.6%) with daily screen time greater than or equal to 60 minutes was higher than that of girls (48.0%)( χ 2=23.62，34.15， P <0.01). After adjusting for age, gender, region, time of medium and high intensity physical activity, intake of sugary food and sugary beverages, daily sleep time, multivariable Logistic regression model showed that girls with daily screen time greater than or equal to 60 minutes ( OR=1.14, 95%CI =1.03-1.27) had a higher risk of myopia than those with less than 60 minutes. After adjusting for confounding factors, there was no correlation between daily screen time and the degree of myopia in boys or girls( P >0.05).@*Conclusion@#Daily screen time greater than or equal to 60 minutes may be a risk factor for myopia in girls aged 11 to 14 years old. Given the complexity of the factors that affect vision, researches are needed to examine the relationship between screen time and myopia.
ABSTRACT
Objective@#To explore the relationship between anemia and neuropsychological development in various domains among preschool children in China.@*Methods@#Data came from the National Nutrition and Health Systematic Survey for children in China, and 3 261 preschool children aged 2-6 years and their parents from 28 sites across 14 provinces were recruited in this study. Parental and child characteristics were obtained by interview administrated questionnaires. Blood hemoglobin(Hb) concentration was determined by Hemocue method. Neuropsychological development quotients were assessed using the Development Scale for Children Aged 0-6 Years(WS/T 580-2017).@*Results@#The average Hb level was (125.23±11.49)g/L and the overall anemia prevalence was 10.30% among preschool children. After adjusting the confounding factors(sex, age, ethnicity, region, feeding mode, maternal status during pregnancy, etc), developmental quotients of gross motor( β=-2.15, 95%CI =-3.89--0.41), fine motor( β=-2.46, 95%CI =-4.12--0.79), adaptive behavior( β=-2.59, 95%CI =-4.42--0.76), language( β=-3.65, 95%CI =-5.53--1.78), personal social behavior( β=-3.11, 95%CI =-4.94--1.28) and full scale( β=-2.79, 95%CI =-4.10--1.49) among children with anemia were significantly lower than non anemic infants( P <0.05).@*Conclusion@#Anemia was negatively associated with developmental quotient, as well as five domains of gross motor, fine motor, adaptive behavior, language, and personal social behavior in preschool children aged 2-6 years. It is suggested to carry out the work of anemia monitoring and intervention in preschool children to further improve their neuropsychological development.
ABSTRACT
Objectives: To describe the development process of home-fortification in complementary food (YingYangBao, YYB) for nutrition security of early children in China and evidence needed for policy-making. Methods: We summarized the effectiveness and experiences of YYB delivery in pilot research and small to large scale trial of YYB in the fields. Results: The YYB program development was in three phases. First, research data collected during 2001-2009 in Gansu province, showed that YYB could reduce the anemia rate and growth failure of children under 24 months old, improve mental development until age of 9 years old. Secondly, YYB was applied in earthquake-affected areas in 2008, and General Standards on Complementary Food Supplements (GB/T 22570-2008) was established. Finally, the YYB projects were scaled up to the communities. A 3-years observation in Ledu County and an 18-months project covered 30,000 children in 8 counties were done during 2009-2012. Based on the scientific evidences, Qinghai provincial government decided to invest 10 million Yuan (1.7 million US dollars) to carry out early child development activities in 15 counties in 2011. Chinese government decided to initiate Children Nutrition Improvement Program in Poor Areas, with free YYB for children 6-24 month old in 100 poor counties in 2012 and the Program is expanded to 300 counties in 2013. Conclusions: Process from science to action for child nutrition improvement was described. An integrated program for government-leading program is developing. Future challenges and efforts on the policy sustainability in respects of demand-supply, public-private partnership and multi-sectoral coordination are discussed.