Duczmal Luiz, Buckeridge David L
Universidade Federal de Minas Gerais, Brazil.
Stat Med. 2006 Mar 15;25(5):743-54. doi: 10.1002/sim.2403.
We propose a modification of the spatial scan statistic that takes account of workflow, which is the movement of individuals between home and work. The objective is to detect clusters of disease in situations where exposure occurs in the workplace, but only home address is available for analysis. In these situations, application of the usual spatial scan statistic does not account for possible differences between home and work address, thereby reducing the power of detection. We describe an extension to the usual spatial scan statistic that uses workflow data to search for disease clusters resulting from workplace exposure. We also present results from simulations that demonstrate the increased power of the workflow scan statistic over the usual scan statistic for detecting clusters arising from exposures in the workplace.
我们提出了一种对空间扫描统计量的修正方法，该方法考虑了工作流程，即个体在家庭和工作场所之间的移动。目的是在暴露发生在工作场所但仅可获得家庭住址用于分析的情况下检测疾病聚集。在这些情况下，应用常规空间扫描统计量无法考虑家庭住址和工作住址之间可能存在的差异，从而降低了检测能力。我们描述了对常规空间扫描统计量的一种扩展，该扩展使用工作流程数据来搜索由工作场所暴露导致的疾病聚集。我们还展示了模拟结果，这些结果表明工作流程扫描统计量在检测由工作场所暴露引起的聚集方面比常规扫描统计量具有更强的检测能力。
