临床流行病学成为循证医疗时代的主流。这些作者在他们的职业生涯中都致力于这一领域。本书展示了临床研究中使用的方法论的优缺点，特别是在随机对照试验中。读者可以在没有任何复杂的数学公式的情况下接近现代临床流行病学。

Clinical epidemiology becaome the mainstream in the era of evidence-based healtg care. These authors all devoted themself to this field in their career. This book demonstrated the advantages and disavantages of methodologies used in clinical research, especillay in randomized controlled trials. Readers can approach modern clinical epidemiology without any complex mathematic formulas.