学习困难儿童铅水平与智商及行为问题的关系

The relationship between lead level and children's intelligence and behavior

目的 研究学习困难儿童铅水平对其智力与行为的影响。方法 采用中国修订版韦氏儿童智力量表 (C- WISC)和 Achenbach儿童行为量表 (CBCL )对 6 2例 6～ 12 a因学习问题来心理门诊就诊的儿童进行了测评 ,同时测试了发铅、血清铅水平 ,对两组指标进行相关分析。为控制混杂因子 ,应用广义线性模型 (GL M)分析了发铅、血铅对儿童智商的作用。结果 发铅水平与儿童智商呈负相关 (r =- 0 .2 6 4 ,P <0 .0 5 ) ,GL M分析结果表明高发铅可能对儿童智力有影响。结论 发铅是反映儿童铅暴露的较好指标 ,因检测相对简便、经济 。

Objective To explore the relationship between lead level and children's intelligence and behavior. Methods 62 children (6～12 years old) from psychological consulting department of hospital were enrolled in the study. The Wechsler Intelligence Scales for Children(Chinese Version 1993) and Achenbach Child Behavior Checklist (CBCL) were applied to measure children's intelligence quotient(IQ) and behavior problems. The concentration of hair and serum lead were examined. Pearson Correlation Analysis and Generalized Linear Model were adopted to test the relationship between the lead level and children's IQ and behavior problems. Results The negative association was found between hair lead concentration and children's IQ (r=-0.264,P< 0.05 ). High level of hair lead concentration would do harm to intelligence. Conclusions Hair lead concentration is sensitive to measure children's lead exposure. It is valuable to scan the vulnerable children from those who suffered from lead exposure.