It seems so simple: if a screening test can detect future disease in an otherwise healthy person, why not be tested? The answer is far from simple. For example, the debate about screening mammography for breast cancer continues to rumble. In an April 2 paper in BMC Medical Informatics and Decision Making, John Keen and James Keen calculate that such screening started at age 50 and repeated will, over 15 years, avert 1-8 deaths from breast cancer per 1000 women screened. Their data were criticised in a commentary in the same journal, by Stephen Duffy from Cancer Research UK, because they used modelling. His view of the data from randomised trials gives a figure of about 3 per 1000
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机译：看起来是如此简单：如果筛查测试可以检测到原本健康的人将来的疾病，为什么不进行检测呢？答案远非如此简单。例如，关于乳腺钼靶筛查的争论持续升温。 John Keen和James Keen在4月2日发表于BMC Medical Informatics and Decision Making的一篇论文中计算出，这种筛查始于50岁，并在15年内重复进行，每1000名筛查的女性避免1-8例乳腺癌死亡。英国癌症研究基金会的斯蒂芬·达菲（Stephen Duffy）在同一期刊的评论中批评了他们的数据，因为它们使用了建模。他对来自随机试验的数据的看法约为每千个样本中有3个
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