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arXiv 2209.02602stat.ME
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人口统计率小区域估计的空间方差平滑区域水平模型

A spatial variance-smoothing area level model for small area estimation of demographic rates

Peter A. Gao, Jon Wakefield

摘要:

准确估计国家以下各级的卫生和人口指标对于为卫生政策决定提供信息至关重要。许多国家利用复杂的住户调查收集相关数据,但在数据有限的情况下,小地区比例的直接调查加权估计数可能不可靠。将这些直接估计值作为响应数据处理的区域水平模型可以提高精度,但通常需要所有区域的直接估计值的已知抽样方差。在实践中,抽样方差通常是估计的,因此标准方法不考虑不确定性的关键来源。为了解释估计的抽样方差的变异性,我们提出了一个分层贝叶斯空间区域水平模型,平滑估计的均值和抽样方差,以产生小面积比例的点和区间估计。我们的模型明确的目标是估计小面积的比例,而不是连续变量的平均值,我们考虑了中度和低度流行事件的例子。我们证明了我们的方法的性能,通过模拟和应用到疫苗接种覆盖率和艾滋病毒流行率数据的人口与健康调查。

英文摘要:

Accurate estimates of subnational health and demographic indicators are critical for informing health policy decisions. Many countries collect relevant data using complex household surveys, but when data are limited, direct survey weighted estimates of small area proportions may be unreliable. Area level models treating these direct estimates as response data can improve precision but often require known sampling variances of the direct estimators for all areas. In practice, the sampling variances are typically estimated, so standard approaches do not account for a key source of uncertainty. In order to account for variability in the estimated sampling variances, we propose a hierarchical Bayesian spatial area level model that smooths both the estimated means and sampling variances to produce point and interval estimates of small area proportions. Our model explicitly targets estimation of small area proportions rather than means of continuous variables and we consider examples of both moderate and low prevalence events. We demonstrate the performance of our approach via simulation and application to vaccination coverage and HIV prevalence data from the Demographic and Health Surveys.

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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