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目的了解我国学龄前(学前)儿童维生素D(VD)摄入情况,并探讨其与生长发育的关系。方法采用多阶段整群抽样抽取中国八地区916名学前儿童展开横断面调查。通过1次24h膳食回顾、体格测量和《中国比内测试》获得调查儿童VD摄入情况与生长发育指标测量值。采用多重线性回归分析VD摄入量与生长发育指标间的关系。结果调查儿童VD摄入量的中位数为1.9μg/d,VD摄入不足、低于RNI或过量的率分别为62.4%、63.3%和21.4%。男女童VD摄入量低于EAR和RNI的率均随年龄增长而上升(P<0.05,P_(trend)<0.01),高于uL的率均随年龄增长而下降(P<0.0S,P_(trend)<0.01)。银耳是调查儿童VD最重要的膳食来源(48.16%),其次是奶类及奶制品(36.16%)和木耳(5.27%)。调查儿童vD的摄入量与体质量、BMI、头围、腰围、上臂围及智力评分呈正相关(P<0.05)。结论vD摄入量与学前儿童生长发育关系密切,而我国八地区学前儿童VD摄入水平不容乐观,建议学前儿童适量增加VD摄入的同时避免VD过量。
Objective To understand the intake of vitamin D (VD) in preschool (pre-school) children in our country and to explore its relationship with growth and development. Methods A total of 916 pre-school children in eight districts of China were recruited to carry out cross-sectional surveys using multistage cluster sampling. Through a 24-hour diet review, physical measurements and “China than the test” to investigate children with VD intake and growth indicators measured. Multiple linear regression analysis of the relationship between VD intake and growth and development indicators. Results The median of VD intake in children was 1.9μg / d. The intake of VD was less than that of RNI or 62.4%, 63.3% and 21.4% respectively. The prevalences of VD intake of boys and girls were lower than that of EAR and RNI (P <0.05, P <0.05), while those higher than uL decreased with age (P <0.0S, P_ (trend) <0.01). Tremella was the most important dietary source for children VD (48.16%), followed by dairy and dairy products (36.16%) and fungus (5.27%). Investigation of children’s vD intake and body mass, BMI, head circumference, waist circumference, upper arm circumference and intelligence score was positively correlated (P <0.05). Conclusions The intake of vD is closely related to the growth and development of pre-school children. However, the VD intake of pre-school children in eight regions of our country is not optimistic. It is suggested that pre-school children should increase VD intake moderately while avoiding VD excess.