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按照全国铅中毒诊断标准修订协作组统一质控规范，对陕西地区铅中毒进行了一次职业流行病学调查．调查了铅接触组275名，对照组194名。取得了陕西地区有质量保证的血铅、尿铅、ZPP、EP与ALA的正常参考值。结合调研结果，对常用铅中毒实验室检测指标进行了评价．并用Bayes判别分析法得出了各项指标的三值（正常值、可接受上限值与诊断值）。将所得三值与全国协作组建议值及其他协作地区所得之三值进行了对比，多数较吻合。从而对全国协作组提出的建议值进行了客观验证。
In accordance with the national diagnostic criteria for lead poisoning revision of the unified quality control norms of norms, Shaanxi Province conducted a lead poisoning occupational epidemiological survey. 275 lead exposure groups and 194 control groups were investigated. Has made in Shaanxi Province have quality assurance of blood lead, urinary lead, ZPP, EP and ALA normal reference value. Combined with the survey results, the commonly used lead poisoning laboratory testing indicators were evaluated. And using Bayes discriminant analysis of the three indicators of the indicators (normal, acceptable upper limit and diagnostic value). The obtained three values are compared with the recommended value of the national cooperation group and the three values obtained from other cooperative regions, most of which are in agreement. Thus the objective value of the proposed value proposed by the National Collaboration Group has been objectively verified.