关键词: 学龄前儿童, 体格发育, Z评分

Abstract: Objective To investigate the growth status of preschool children in Aba Prefecture,and to provide evidence for improving nutritional status of children in minority areas. Methods A total of 4 368 children from the kindergartens of eight counties in Aba Prefecture were enrolled in this study by using stratified and cluster random sampling method in 2015.And the height,weight,head circumference and chest circumference were measured.Results were evaluated according to reference standard for WHO (2006) by Z scores. Results Boys' weight,head circumference,chest circumference and body mass index(BMI) in most age groups were significantly higher than those of girls(P<0.05).The values of height,head circumference,chest circumference and BMI were significantly different in the nations.Children's HAZ (Z-scores of length/height-for-age),and WAZ(Z-scores of weight-for-age )were negative values in Aba Prefecture.The difference of HAZ and WAZ were statistically significant between the urban and rural areas in different nations(P<0.05). Conclusions The physical development status of preschool children in Aba Prefecture still lag behind the WHO standard.Attention should be paid to the health care of the preschool children in the kindergartens.

Key words: preschool children, physical development, Z-scores