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绿茶、红茶消耗量与肺癌风险:一项荟萃分析 |
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Green tea, black tea consumption and risk of lung cancer: A meta-analysis |
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Tang N, Wu Y, Zhou B, Wang B, Yu R 2009/8/11 13:15:00 |
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Lung Cancer, 2009, Volume 65, Issue 3
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Studies investigating the association of green tea and black tea consumption with lung cancer risk have reported inconsistent findings. To provide a quantitative assessment of this association, we conducted a meta-analysis on the topic. Studies were identified by a literature search in PubMed from 1966 to November 2008 and by searching the reference lists of relevant studies. Summary relative risk (RR) estimates and their corresponding 95% confidence intervals (CIs) were calculated based on random-effects model. Our meta-analysis included 22 studies provided data on consumption of green tea or black tea, or both related to lung cancer risk. For green tea, the summary RR indicated a borderline significant association between highest green tea consumption and reduced risk of lung cancer (RR = 0.78, 95% CI = 0.61-1.00). Furthermore, an increase in green tea consumption of two cups/day was associated with an 18% decreased risk of developing lung cancer (RR = 0.82, 95% CI = 0.71-0.96). For black tea, no statistically significant association was observe through the meta-analysis (highest versus non/lowest, RR = 0.86, 95% CI = 0.70-1.05; an increment of two cups/day, RR = 0.82, 95% CI = 0.65-1.03). In conclusion, our data suggest that high or an increase in consumption of green tea but not black tea may be related to the reduction of lung cancer risk. © 2008 Elsevier Ireland Ltd. All rights reserved.
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Correspondence Address: Tang, N.; National Shanghai Center for New Drug Safety Evaluation and Research, Shanghai Institute of Pharmaceutical Industry, Zhangjiang Hi-Tech Park, 199 Guoshoujing Road, Pudong, Shanghai, 201203, China; email:naping.tang@gmail.com |
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疾病资源中心
摘自:《西氏内科学》,第23版
患者女性,21岁,因干咳、间歇性气促2个月到急诊科就诊。开始症状为上呼吸道感染引起的鼻塞、流涕和咳嗽。医生检查后开了抗生素。服药后鼻部症状缓解,但仍有轻微干咳和呼吸困难。其他症状包括疲劳和焦虑。否认发热、体重减轻、胸痛、端坐呼吸、气喘、鼻后滴漏、胃灼热以及神经系统症状。
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