The blood lead level of children having bad habits of diet and behavior was higher than that of not having bad habits, but there had no significant statistical difference(both P>0.05).
有不良饮食、行为习惯的儿童血铅水平高于无不良习惯的儿童血铅水平，但差异无统计学意义（均P>0.05）。
In children with moderate and severe lead poisoning, the basophilic stippling erythrocyte increased significantly with the increase of blood lead level.
中度以上铅中毒儿童的血铅与嗜碱性点彩红细胞铅中毒有显著的相关关系。
Objective: to test lead level in blood of children with learning difficulty to investigate the relationship of children's intelligence and lead level in blood.
目的：检测学习困难儿童的血铅水平，以分析儿童智力与血铅的关系。
OBJECTIVE: To assess the effect of blood lead level on t cell subgroup of children, and the association of t cell subgroup with threshold limit value of blood lead level.
目的：评估血铅对儿童T细胞亚群的影响，以及血铅临界值与T细胞亚群的关系。
Conclusion Risk of lead poisoning is serious for boys than for girls. There is relationship between blood lead level and abnormal behavior of children.
结论铅对男童的危害高于女童，高血铅与儿童行为异常有关。
Although the level of blood lead is not high among 6 to 12 school children in both city and town of Yantai, the health of children with high blood lead and near-high blood lead has been affected.
烟台市城乡部分6 ~12岁儿童的血铅水平不高，但高血铅、临界高血铅儿童的健康已受到一定影响。
Objective: To investigate the blood lead level of 2~7years old children in Dalian and identify the related factors of high lead level. to provide scientific date for preventing lead poisoning .
目的：调查大连市城区2～7岁儿童血铅水平现状及其影响因素，为防治铅中毒提供依据。
Objective: To investigate the blood lead level of 2~7years old children in Dalian and identify the related factors of high lead level. to provide scientific date for preventing lead poisoning .
目的：调查大连市城区2～7岁儿童血铅水平现状及其影响因素，为防治铅中毒提供依据。
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