对美国国家肿瘤监测、流行病学和结果分析研究所的肺癌资料分析,结果发现:直到70年代,白人男性肺癌发病率增加10%。80年代初,增长率有所降低,然后保持较低水平,1982～1983年肺癌发病率降低4%。据估计:仅1983年肺癌病例就减少了7,000多个。肺癌发病率和死亡率对45岁的男性,从1973年就开始下降,54岁以上男性发病率和死亡率从1978年开始保持一定。黑人男性的年龄调整发病率高于白人近50%,但发病率和死亡率的降低趋势相同。 Lung cancer data from the National Institute of Cancer Surveillance, Epidemiology and Results Analysis found that the incidence of lung cancer in white men increased by 10% by the 1970s. In the early 1980s, the growth rate decreased and then kept at a low level. The incidence of lung cancer was reduced by 4% from 1982 to 1983. It is estimated that more than 7,000 lung cancer cases were reduced in 1983 alone. The incidence and mortality of lung cancer have declined in 45-year-old men since 1973, and morbidity and mortality among men over 54 have remained constant since 1978. The age-adjusted incidence of black men is nearly 50% higher than whites, but the incidence of morbidity and mortality tends to decrease the same.