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目的了解兰州市1~8岁儿童血铅现状,为儿童铅中毒的防治提供科学依据。方法随机选取门诊就诊儿童进行血微量元素检测和调查问卷,采用χ2检验和多元线性回归进行结果分析。结果兰州市儿童血铅水平的几何均数为50μg/L,血铅≥100μg/L占10.13%。其中男童中血铅≥100μg/L者占10.19%,女童中占10.05%,差异无统计学意义(P>0.05);3岁组铅中毒率最高,为14.38%,其次是1岁组和5岁组,分别为13.89%和13.98%;线性回归分析显示血锌的标准回归系数最大,为0.118,与儿童血铅水平有显著相关性。结论兰州市的儿童血铅水平仍相对较高,尤其是学龄前期儿童血铅超标率较高,应引起高度的关注。
Objective To understand the status of blood lead in children aged 1 ~ 8 years in Lanzhou and to provide a scientific basis for the prevention and control of lead poisoning in children. Methods Children in outpatient department were selected randomly to carry out blood trace element test and questionnaire. The results were analyzed by χ2 test and multiple linear regression. Results The mean blood lead level of children in Lanzhou was 50μg / L, and the blood lead ≥100μg / L accounted for 10.13%. The prevalence of lead poisoning in boys was 10.19% and 10.05% in girls (P> 0.05). The highest rate of lead poisoning was 14.38% in the 3-year-old group, followed by that in the 1-year-old group 5 years old group, respectively, 13.89% and 13.98%; linear regression analysis showed that the standard regression coefficient of blood zinc maximum of 0.118, and children with significant correlation between blood lead levels. Conclusion The levels of blood lead in children in Lanzhou City are still relatively high, especially the high blood lead level in preschool children, which should be highly concerned.