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arXiv 1002.2426stat.APphysics.data-anq-bio.QM
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被访者驱动抽样方法的灵敏度

The Sensitivity of Respondent-driven Sampling Method

Xin Lu, Linus Bengtsson, Tom Britton, Martin Camitz, Beom Jun Kim, Anna Thorson, Fredrik Liljeros

摘要:

许多科学领域的研究人员从个人到更大的群体进行推断。然而,对于许多群体来说,没有成员名单可以从中抽取随机样本。回应者驱动抽样(RDS)是一种相对较新的抽样方法,它通过使用所研究群体的社交网络来规避这一困难。在某些条件下,RDS方法已被证明可以提供人口比例的无偏估计。该方法目前广泛用于全球艾滋病毒相关高危人群的研究。在本文中,我们测试的RDS方法,通过模拟RDS研究的社交网络的一个大型LGBT网络社区。的RDS方法的鲁棒性进行了测试,违反,一个接一个,该方法提供无偏估计的条件下。结果表明,偏见的风险是大的,如果网络是直接的,或受访者选择邀请的人的基础上的特征与研究结果。如果这两个问题是不存在的,RDS方法表现出很强的抵抗力,低响应率和某些错误的参与者的报告,他们的网络规模。其他可能影响RDS估计的问题,如选择初始参与者的方法,每个参与者的最大招募次数,有或没有替换和网络结构的变化,也进行了模拟和讨论。

英文摘要:

Researchers in many scientific fields make inferences from individuals to larger groups. For many groups however, there is no list of members from which to take a random sample. Respondent-driven sampling (RDS) is a relatively new sampling methodology that circumvents this difficulty by using the social networks of the groups under study. The RDS method has been shown to provide unbiased estimates of population proportions given certain conditions. The method is now widely used in the study of HIV-related high-risk populations globally. In this paper, we test the RDS methodology by simulating RDS studies on the social networks of a large LGBT web community. The robustness of the RDS method is tested by violating, one by one, the conditions under which the method provides unbiased estimates. Results reveal that the risk of bias is large if networks are directed, or respondents choose to invite persons based on characteristics that are correlated with the study outcomes. If these two problems are absent, the RDS method shows strong resistance to low response rates and certain errors in the participants' reporting of their network sizes. Other issues that might affect the RDS estimates, such as the method for choosing initial participants, the maximum number of recruitments per participant, sampling with or without replacement and variations in network structures, are also simulated and discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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