【摘要】 本文介绍新近推出的一种针对难以接近人群的抽样方法-同伴推动抽样法(RDS)，对方法的理论要点、实际应用中的注意事项、用该法收集资料的分析以及方法的优缺点进行了讨论。

    【关键词】 抽样研究

    A new approach of sampling hard-to-reach population，respondent-driven sampling(RDS)

    ZHAO Jin-kou ，MA Xiao-yan，WANG Li-yan，LV Fan.

    1.Jiangsu Center for Disease Control and Pre-vention(now seconded to Global AIDS Program，China Office，Center for Disease Control and Pre-vention)，Nanjing 210009，China;2.Beijing Center for Disease Control and Prevention，Beijing 100013，China;3.National Center for HIV/AIDS/STD Control and Prevention，Chinese Center for Disease Control and Prevention，Beijing 100050，China

    【Abstract】 The paper introduces respondent driven sampling(RDS)，which is a recently applied sam-pling method for hard-to-reach population.Major theoretical mechanisms，operational issues related to RDS，analysis of data collected by RDS and advantages and disadvantages of RDS are discussed.

    【Key words】 Sampling studies (Chin J Dis Control Prev2005，9(6):634-637)

    在进行流行病学调查和监测过程中，经常需要用抽样调查的信息推测要调查的总体，面对的难题是如何进行抽样。通常使用的方法有概率抽样和非概率抽样。概率抽样 [1] 是指在抽样时总体中每个个体以一个已知的概率被抽取 ......