Objective: To investigate the detection of occupational health for vinyl chloride workers in Tianjin. Methods: In this study, we have collected data from 7 companies with vinyl chloride hazards in 16 districts of Tianjin. Finally, the occupational health surveillance data of 478 vinyl chloride-exposed workers were included in the analysis. Quantitative data was tested for normality. If the data conforms to the normal distribution, using the Mean±SD for statistical description, and t test for statistical analysis. If the data does not conform to the normal distribution, using Median (Q(1), Q(100)) for statistical description, rank sum test for statistical analysis. The qualitative data was described by composition ratio, and the chi-square test was used for statistical analysis. The logistic regression was used to assess the impact on suspected occupational disease and occupational contraindication from personal general conditions, occupational history, company information. Results: The abnormal detection rate of vinyl chloride monomer workers in Binhai New Area was higher than that in other areas (χ(2)=5.20, P=0.023). The abnormal detection rate of vinyl chloride monomer workers in non manufacturing industries was higher than that in manufacturing industries (χ(2)=7.74, P=0.005). The abnormal detection rate of vinyl chloride monomer workers in domestic enterprises was higher than that in foreign invested enterprises (χ(2)=22.38, P<0.01). Compared with the normal group of vinyl chloride monomer workers, the abnormal group of workers was older and had longer working years, The difference was statistically significant (Z=-3.32, -3.54, P=0.001, <0.01). The employer of vinyl chloride monomer workers is in Binhai New Area, the economic type is domestic funded enterprise, the industry is classified as non manufacturing industry, the age is more than 40 years old, and the length of service is more than 20 years old, which is the influencing factor for workers to detect abnormalities (OR=1.875, 95%CI: 1.279~2.749; OR=1.657, 95%CI: 1.071~2.563; OR=3.562, 95%CI: 2.057~6.170; OR=2.166, 95%CI: 1.245~3.768; OR=1.968, 95%CI: 1.345~2.879, all P<0.05) . Conclusion: To protect the health of workers and prevent occupational diseases, the management of vinyl chloride exposure on production process, especially in domestic enterprise, should be improved. Also, better occupational health surveillance should be provided to female workers.
目的： 探讨天津市氯乙烯单体作业工人职业健康检查情况。 方法： 于2021年12月，通过《职业病及健康危害因素监测系统》收集天津市7家存在氯乙烯单体危害的企业信息和478名氯乙烯单体作业工人在岗期间职业健康检查资料。定量资料进行正态性检验，符合正态分布用x±s表示，用t检验进行统计分析；不符合正态分布数据采用中位数[M（Q(1)，Q(3)）]表示，用秩和检验进行统计分析。定性资料用构成比（%）描述，χ(2)检验进行统计分析。用单因素、多因素非条件logistic回归分析氯乙烯单体作业工人个人一般信息、职业史、企业信息与氯乙烯单体作业工人检出异常的关系。 结果： 滨海新区氯乙烯单体作业工人异常检出率高于其他区（χ(2)=5.20，P=0.023），非制造业氯乙烯单体作业工人异常检出率高于制造业（χ(2)=7.74，P=0.005），内资企业氯乙烯单体作业工人异常检出率高外商投资企业（χ(2)=22.38，P<0.01），与氯乙烯单体作业工人正常组比较，异常组工人年龄较大、工龄较长，差异均有统计学意义（Z=-3.32、-3.54，P=0.001、<0.01）。氯乙烯单体作业工人用人单位在滨海新区，经济类型为内资企业，行业分类为非制造业，年龄大于40岁，工龄大于20年均是工人检出异常的影响因素（OR=1.875，95%CI：1.279~2.749；OR=1.657，95%CI：1.071~2.563；OR=3.562，95%CI：2.057~6.170；OR=2.166，95%CI：1.245~3.768；OR=1.968，95%CI：1.345~2.879；均P<0.05）。 结论： 应重点加强本市内资企业生产环境中氯乙烯单体作业的管理，从而更有针对性地保护作业人员的身体健康。.
Keywords: Abnormalities rate; Occupational Exposure; Occupational health examination; Vinyl chloride.