Silva Luis Carlos
Escuela Nacional de Salud Pública, La Habana, Cuba. Address: Calle 27e M y N #110 Vedado 10400, Ciudad de la Habana, Cuba. Email:
Medwave. 2014 May 2;14(4):e5944. doi: 10.5867/medwave.2014.04.5944.
The article includes a brief summary on the scope of the notions of causality and risk and considers some operational difficulties that arise when dealing with problems associated with them. It underscores the vital importance of timing and its link with the most commonly used observational research designs that address causal relationships. The article describes in detail the need to record the order in which the relevant events occur and how to consider this in the analysis. A detailed example of errors that are usually incurred in and their effect is provided.
本文简要总结了因果关系和风险概念的范围，并探讨了在处理与之相关的问题时出现的一些操作困难。它强调了时间的至关重要性及其与处理因果关系的最常用观察性研究设计的联系。本文详细描述了记录相关事件发生顺序的必要性以及如何在分析中加以考虑。还提供了一个通常会出现的错误及其影响的详细示例。
