Relationship between mediation analysis and the structured life course approach.

Relationship between mediation analysis and the structured life course approach.
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DOI:
10.1093/ije/dyw254
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发表时间:
2016-08
影响因子:
7.7
通讯作者:
Fraser A
Fraser A
中科院分区:
医学1区
文献类型:
--
作者:
Howe LD;Smith AD;Macdonald-Wallis C;Anderson EL;Galobardes B;Lawlor DA;Ben-Shlomo Y;Hardy R;Cooper R;Tilling K;Fraser A

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由于暴露和结果之间的潜伏期较长,生命过程流行病学中的许多问题涉及中介和/或相互作用。在本文中,我们将探讨如何中介分析(基于反事实理论,并使用传统的回归方法实现)链接到一个结构化的方法来选择生命历程假设。使用理论和模拟数据,我们展示了如何在结构化的生命历程方法评估的替代生命历程假设对应于不同的中介和交互参数的组合。例如,生命早期关键期模型对应于生命早期暴露的直接影响,但没有通过中介的间接影响,并且生命早期暴露与中介之间没有相互作用。我们还比较了这些方法使用一个说明性的真实数据的例子,使用数据的父母职业社会阶层(早期生活暴露),自己的成年职业社会阶层(调解人)和身体能力(结果)。
Many questions in life course epidemiology involve mediation and/or interaction because of the long latency period between exposures and outcomes. In this paper, we explore how mediation analysis (based on counterfactual theory and implemented using conventional regression approaches) links with a structured approach to selecting life course hypotheses. Using theory and simulated data, we show how the alternative life course hypotheses assessed in the structured life course approach correspond to different combinations of mediation and interaction parameters. For example, an early life critical period model corresponds to a direct effect of the early life exposure, but no indirect effect via the mediator and no interaction between the early life exposure and the mediator. We also compare these methods using an illustrative real-data example using data on parental occupational social class (early life exposure), own adult occupational social class (mediator) and physical capability (outcome).
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