比较雪球采样和RDS:一个方法和案例研究
Dongah Kim1, Krista J Gile2, Bradley Mathers3
1Integrative Biology Department, University of Texas Austin, Austin, Texas, United States of America.
PloS one
|January 14, 2026
概括
受访者驱动采样 (RDS) 和雪球采样是接触难以接触的人群的方法. 本研究模拟了它们在生物行为调查中的使用,以比较它们的有效性,并确定何时更简单的方法是合适的.
科学领域:
- 流行病学 流行病学
- 生物统计学 生物统计学
- 公共卫生 公共卫生
背景情况:
- 难以接触的群体往往需要专门的采样技术来进行有效的公共卫生监测.
- 受访者驱动采样 (RDS) 是一种推用于HIV,病毒性肝炎和性传播感染的生物行为调查 (BBS) 的基于概率的方法.
- 传统的雪球采样通常用于非概率性,并且正在为资源有限的设置开发简化的版本.
研究的目的:
- 将从卫生服务开始的雪球采样结果与使用基于数据的模拟的受访者驱动采样 (RDS) 的结果进行比较.
- 在生物行为调查的背景下,评估这两种采样方法之间的相似之处和差异.
- 为简化快速生物行为调查方法的开发提供信息.
主要方法:
- 利用基于数据的模拟来建模采样过程.
- 模拟雪球样本 (从卫生服务部门招聘) 的结果与模拟RDS样本进行了比较.
- 分析了从每种方法中得出的人口估计的潜在相似性和差异.
主要成果:
- 模拟提供了关于雪球采样和RDS的比较性能的见解.
- 确定了雪球采样可能接近RDS结果的特定场景.
- 突出了抽样复杂性,成本和数据质量之间的权衡.
结论:
- 受访者驱动采样 (RDS) 在生物行为调查中为基于概率的采样提供了优势.
- 当RDS不可行时,简化的雪球采样方法可能是可行的替代方案,但需要仔细考虑.
- 需要进一步的研究和模拟来完善关键人群的快速生物行为调查方法.
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