Radon is a radioactive gas that can migrate from soils and rocks and accumulate in indoor areas such as dwellings and buildings. Many studies have shown a strong association between the exposure to radon, and its decay products, and lung cancer (LC), particularly in miners. In Mexico, according to published surveys, there is evidence of radon exposure in large groups of the population, nevertheless, only few attention has been paid to its association as a risk factor for LC. The aim of this ecological study is to evaluate the excess risk of lung cancer mortality in Mexico due to indoor radon exposure. Mean radon levels per state of the Country were obtained from different publications and lung cancer mortality was obtained from the National Institute of Statistics, Geography and Informatics for the period 2001-2013. A model proposed by the International Commission on Radiological Protection to estimate the annual excess risk of LC mortality (per 105 inhabitants) per dose unit of radon was used. The average indoor radon concentrations found rank from 51 to 1863 Bq m-3, the higher average dose exposure found was 3.13 mSv year-1 in the north of the country (Chihuahua) and the mortality excess of LC cases found in the country was 10 ± 1.5 (range 1-235 deaths) per 105 inhabitants. The highest values were found mainly in the Northern part of the country, where numerous uranium deposits are found, followed by Mexico City, the most crowded and most air polluted area in the country. A positive correlation (r = 0.98 p < 0.0001) was found between the excess of LC cases and the dose of radon exposure. Although the excess risk of LC mortality associated with indoor radon found in this study was relatively low, further studies are needed in order to accurately establish its magnitude in the country.

中文翻译：

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室内ra暴露和肺癌死亡率过高：以墨西哥为例的生态研究。

on是一种放射性气体，可以从土壤和岩石中迁移出来，并积聚在房屋和建筑物等室内区域。许多研究表明，尤其是在矿工中，暴露于ra及其衰变产物与肺癌（LC）之间密切​​相关。根据已发布的调查，在墨西哥，有证据表明大批人群中存在exposure暴露，但是，很少有人关注its与LC的关联性。这项生态研究的目的是评估由于室内ra暴露导致的墨西哥肺癌死亡的额外风险。该国每个州的平均ra水平是从不同的出版物中获得的，肺癌死亡率是从国家统计，地理和信息学研究所获得的2001-2013年期间的。使用了由国际放射防护委员会提议的模型，用于估算每剂量单位of的LC死亡（每105居民）的年度超额风险。在该国北部（奇瓦瓦州）发现的室内平均ra浓度范围为51至1863 Bq m-3，发现的较高平均剂量暴露为1.13 mSv year-1，在该国发现的LC病例的死亡率超标为10每105位居民±1.5（死亡人数为1-235）。发现最高值的地区主要是在该国北部，那里发现了许多铀矿床，其次是墨西哥城，墨西哥是该国最拥挤，空气污染最严重的地区。在过量LC患者和and暴露剂量之间发现正相关（r = 0.98 p <0.0001）。