Lung-cancer screening with chest computerized tomography (CT) is not easy to introduce in low-medium resource countries due to cost issues. We investigated whether the increasing availability of chest CT exams in Brazil, in spite of no lung-cancer screening protocol, was associated with lung-cancer death rate along 10-year follow-up. We performed regressions to estimate the rate ratio between chest CT exams and lung-cancer deaths per 10⁵ inhabitants. We stratified data per municipality. Regressions were adjusted for physicians and hospital beds per 10⁵ inhabitants and per capita gross domestic product. Increasing availability of chest CT exams predicted decreasing lung-cancer death rate.

由于成本问题，在中低资源国家不易采用胸部计算机断层扫描（CT）进行肺癌筛查。我们调查了巴西，尽管没有进行肺癌筛查，但胸部CT检查的可用性增加是否与10年随访期间的肺癌死亡率相关。我们进行了回归分析，以估算每10 ^5位居民的胸部CT检查与肺癌死亡之间的比率。我们对每个城市的数据进行了分层。对每10 ⁵名居民的医生和医院床位以及人均国内生产总值的回归进行了调整。越来越多的胸部CT检查预示着肺癌死亡率的降低。