A Three-Level Mixed Model to Account for the Correlation at both the Between-Day and the Within-Day Level for Ecological Momentary Assessments.
A Three-Level Mixed Model to Account for the Correlation at both the Between-Day and the Within-Day Level for Ecological Momentary Assessments.
复制标题
一个三级混合模型，以说明生态瞬时评估的日期和日期水平的相关性。
DOI：
10.1007/s10742-020-00220-w
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发表时间：
2020-12
影响因子：
1.5
通讯作者：
Hedeker D
中科院分区：
文献类型：
--
作者：
Ma Q;Mermelstein R;Hedeker D
生态瞬时评价（EMA）研究旨在探讨被试的心理状态与真实的环境因素之间的相互作用。在EMA研究期间，受试者可以在几天内和每天内接受密集的提示评估，这会产生三级纵向数据，例如，受试者级别（级别-3）、受试者中嵌套的日级别（级别-2）和每天嵌套的评估级别（级别-1）。这些三个水平的数据可能会表现出复杂的纵向相关结构，但忽略或错误指定的主题内的相关结构可能会导致偏差的关键效应和组内相关的估计。给定三水平EMA数据和响应的时间戳，我们提出了一个线性混合效应模型，在每个水平上都有随机效应。在这个模型中，我们考虑了2级自相关和1级自相关，并展示了来自三个水平数据的结构信息如何改善模型的拟合。随着真实的时间戳的评估，我们还提供了一个有用的扩展，这个建议的模型来处理EMA评估中的不规则间距的问题。
Ecological Momentary Assessment (EMA) studies aim to explore the interaction between subjects’ psychological states and real environmental factors. During the EMA studies, participants can receive prompted assessments intensively across days and within each day, which results in three-level longitudinal data, e.g., subject-level (level-3), day-level nested in subject (level-2) and assessment-level nested in each day (level-1). Those three-level data may exhibit complex longitudinal correlation structure but ignoring or mis-specifying the within-subject correlation structure can lead to bias on the estimation of the key effects and the intraclass correlation. Given the three-level EMA data and the time stamps of the responses, we proposed a linear mixed effects model with random effects at each level. In this model, we accounted for level-2 autocorrelation and level-1 autocorrelation and showed how structural information from the three-level data improved the fit of the model. With real time stamps of the assessments, we also provided a useful extension of this proposed model to deal with the issue of irregular-spacing in EMA assessments.
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