Search

The cohort study of lung cancer in high-risk population in communities in China was a part of Lung Cancer Cohort Study initiated in 2017 and funded by Precision Medicine Research of National Key Research and Development Program. Around 50 000 participants from the communities were enrolled from 7 cities in 7 regions in China. Information about the risk factors for lung cancer were collected and the populations at high risk for lung cancer were identified. Then, low-dose CT (LDCT) screening of lung cancer was conducted in the populations at high risk, and further information about the diagnosis of lung cancer cases and death cases were collected. Therefore, a community population-based cohort was established for lung cancer risk factor exposure survey, high risk population evaluation, LDCT screening and lung cancer case and death follow up. Meanwhile, biological samples were collected from all the participants in the cohort to support the future precision medicine research of lung cancer.肺癌社区高危人群队列是2017年启动的国家重点研发计划精准医学专项“肺癌专病队列研究”的一部分，其主要目标是在全国7个大区的7个城市，收集5万例以上社区人群肺癌危险因素暴露信息，识别肺癌高危人群，开展低剂量螺旋CT筛查，并进一步追踪肺癌确诊和死亡信息；同时采集生物样本，建立以社区人群为基础、涵盖危险因素暴露、人群危险评估、低剂量螺旋CT筛查、生物样本以及结局随访信息的肺癌社区高危人群队列，为后续开展肺癌精准医学研究提供数据和样本支持。.

Gastric cancer is one of the most common cancer. Studies have been conducted to evaluate the association between anthropometric indicators and gastric cancer, but the results were inconsistent. Therefore, a literature retrieval was conducted by using PubMed and Wanfang databases to summarize the latest research progress in the cohort study of the association between anthropometric indicators and the risk for gastric cancer. It was found that both general obesity and abdominal obesity might increase the risk for gastric cancer, while the association between underweight and gastric cancer needs further study. This paper summarizes the progress in the cohort study of association between anthropometric indicators for the risk for gastric cancer in order to provide evidence for the prevention and control of gastric cancer.胃癌是严重威胁人类健康的最重要恶性肿瘤之一。流行病学研究提示，身体测量指标与胃癌发病可能存在关联，目前研究结果尚不一致。本文通过查阅PubMed、万方数据知识服务平台等数据库文献，系统回顾了国内外关于身体测量指标与消化系统恶性肿瘤发病关系的前瞻性队列研究，并进行总结，结果显示，全身性肥胖和腹型肥胖可能与贲门癌发病风险相关，体重过轻与胃癌发病关联需进一步确证。本文从身体测量指标角度出发综述了胃癌发病的研究进展，以期为该领域未来研究方向提供思路，并为人群的胃癌防治提供科学依据。.

To investigate the effect of baseline body mass index (BMI) on the risk of lung cancer incidence in male smokers.All the male employees and retirees of the Kailuan Group were recruited in the Chinese Kailuan Male Cohort Study, and they had been experienced routine physical examinations every two years since May, 2006. Up to 31st December 2011, a total of 3 rounds physical examinations had been completed. A total of 42 718 male smokers candidates from the Chinese Kailuan Male Cohort Study were enrolled in the present study. The date of entering this study was defined as that of taking first check-up, and the date of end-of-observation was defined as that of cancer diagnosis, death or end of follow-up (31 December 2011). Information on demographics, lifestyle such as smoking, alcohol consumption, anthropometries such as height and weight, as well as the information of newly-diagnosed cancer cases, were collected at the baseline investigation. Multivariable Cox proportional hazards regression models were used to investigate the association between levels of the baseline BMI and risk of lung cancer.Of the 42 718 male smokers, there were 181 998.09 person-years of follow-up, taking 4.26 years of average follow-up period. During follow-up, 234 new lung cancer cases were identified among the 42 718 male smokers and the crude incidence density was 128.57/100 000. After the factors adjustment for age, education level, alcohol consumption, physical activity, work environment and cumulative smoking levels (pack-years), compared with subjects of normal BMI group, hazard ratio and 95% confidence intervals of lung cancer for subjects of underweight, overweight, and obesity were 1.63 (0.79-3.37), 0.79 (0.57-1.09) and 0.50 (0.27-0.91), respectively. After the facotors adjustment for age, education level, alcohol consumption, physical activity, work environment and cumulative smoking levels (pack-years), compared with subjects of normal BMI, hazard ratio and 95% confidence intervals of lung cancer for subjects of obesity among subjects who aged 50 years or above, smoked more than 20 pack-years, and exercised less than 4 times per week were 0.33 (0.15-0.71), 0.27 (0.10-0.75), and 0.44 (0.20-0.96), respectively. Obesity subjects who worked above the well had decreased risk of lung cancer (HR=0.38, 95% CI: 0.15-0.96) compared with normal BMI ones who worked above the well.BMI was negatively correlated with the risk of lung cancer in male smokers. As for male smokers, one of the most effective approaches to prevent and control the lung cancer has been shown to quit smoking and keep fit.