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1940年以来,北卡罗来纳州(NC)粉尘作业工人的部分尘肺监测登记表中,已诊断为矽肺的共有760例。据1940年至1983年人口情况资料,确诊714例矽肺,其中死亡的550例,546例获得了死亡证书。肺结核、肠癌和肺癌、肺炎、支气管炎、肺气肿、哮喘、尘肺和肾疾病的死亡率在白种人中显著增高;结核、缺血性心脏病及尘肺在非白种人中显著增高。参比美国死亡率,在白种人中肺癌的SMR(95％CI)为2.6(1.8～3.6),在未接触其它已知职业性致癌物的人群中为2.3(1.5～3.4),在那些无其它接触和诊断为矽肺的NC粉尘作业工人为2.4(1.5～3.6)。
A total of 760 cases of silicosis have been diagnosed in part of the pneumoconiosis monitoring register for dust workers in North Carolina (NC) since 1940. According to the demographic data from 1940 to 1983, 714 cases of silicosis were diagnosed, of which 550 died and 546 death certificates were obtained. Mortality in tuberculosis, bowel and lung cancer, pneumonia, bronchitis, emphysema, asthma, pneumoconiosis and kidney disease was significantly higher in Caucasians; tuberculosis, ischemic heart disease and pneumoconiosis were significantly increased in non-white people . In reference to U.S. mortality, SMR (95% CI) was 2.6 (1.8-3.6) for lung cancer in Caucasian individuals and 2.3 (1.5-3.4) for those not exposed to other known occupational carcinogens. Among those NC dust workers without any other contact and diagnosis of silicosis were 2.4 (1.5-3.6).