Objective To analyze the levels of six kinds of trace elements calcium (Ca) ,magnesium(Mg) ,copper(Cu) ,zinc(Zn) , iron(Fe) and plumbum(Pb) among preschool children in Xianyang area ,and influence factor .Methods The cluster random sam-pling method was adopted to sampled 365 preschool children with different genders as research subjects from urban districts (Qindu District ,Weicheng District) ,southern plain districts(except Beiwu County and urban area) and northern mountain districts(Ganjing Town ,Yongshou County) ,in which 118 cases in the urban district group ,118 cases in the southern plain districts group and 129 ca-ses in the northern mountain districts group .The levels of whole blood Ca ,Mg ,Cu ,Zn ,Fe and Pb were detected .The multivariate regression analysis was performed by combining with the questionnaire investigation indicators .Results The levels of Zn and Pb had statistically significant difference among 3 groups(F=13 .145 ,35 .438 ,P<0 .05);in the comparison of feeding and parenting patterns among 3 groups ,the difference was statistically significant (χ2 =37 .409 ,7 .023 ,P<0 .05) .The feeding pattern of domestic milk powder was negatively correlated with the Ca and Fe levels ,the family income was positively correlated with the Ca and Fe lev-els ;the plain district was positively correlated with the Mg level .No adding complementary feeding was negatively correlated with the Mg level ;the skip-generation raising was positively correlated with the Cu level ;relative to the urban area ,the mountain district was negatively correlated with the Zn level and positively correlated with the Pb level ;the dinner as the main thing in the dietary structure was positively correlated with the Zn level .Conclusion The imbalance of different regional economy development in Xian-yang area and different dietary and living style in preschool children are the major causes generating the differences of trace elements levels .It is necessary to formulate the targeting comprehensive prevention and treatment programs for promoting the physical and mental health of children .%目的 分析咸阳地区学龄前儿童血6种元素钙、镁、铜、锌、铁、铅水平以及影响因素.方法 采用整群随机抽样的方法,在陕西省咸阳市城区(秦都区、渭城区)、南部平原地区(除北五县及城区外)及北部山区(永寿县甘井镇)纳入不同性别的365例学龄前儿童,其中咸阳市区组118例,南部平原组118例,北部山区组129例.检测全血钙、镁、铜、锌、铁、铅,结合问卷调查指标,进行多因素回归分析.结果 3组儿童锌、铅水平差异有统计学意义(F分别为13.145、35.438,P<0.05);3组喂养方式、抚养方式的比较,差别有统计学意义(χ2分别为37.409、7.023,P<0.05).国产奶粉喂养与儿童钙、铁水平呈负相关,家庭年收入与儿童钙、铁水平呈正相关;平原地区与儿童镁水平呈正相关,不添加辅食与镁水平呈负相关;隔代抚养与铜水平呈正相关;山区相对于城区与锌水平呈负相关,与铅水平呈正相关;膳食结构中以正餐为主与锌水平呈正相关.结论 咸阳地区不同区域经济发展的不平衡及学龄前儿童饮食生活方式的不同是造成元素水平差异的最主要原因,要进一步制订有针对性的综合防治方案,促进儿童身心健康.
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