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在控制了诸如年龄、体质指标、吸烟和饮酒等重要的潜在混杂因素后,发现血铅与连续测得的血压间呈显著相关(P<0.001)。但是,血铅水平过低所致的铅接触效应要低于其它与升高血压有关的环境和膳食因素。对288名未接受高血压治疗的汽车司机进行血铅与血压相关性研究时发现,血铅浓度在2~15μg/dl范围内
After controlling for important potential confounders such as age, body composition, smoking and alcohol consumption, it was found that there was a significant correlation between blood lead and blood pressure measured continuously (P <0.001). However, lead exposure caused by low blood lead levels is lower than other environmental and dietary factors associated with elevated blood pressure. In a study of blood lead and blood pressure in 288 motorists who did not receive hypertension, they found that blood lead concentrations ranged from 2 to 15 μg / dl