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Quasi-longitudinal Designs in SEM state Space Modeling

机译:SEM状态空间建模中的准纵向设计

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The collection of longitudinal data over the full model time scope is often an appropriate way to estimate the dynamic state space model with time-varying parameters. Nevertheless, in many situations it is possible and preferable to collect and combine data from independent groups of subjects, each covering a shorter interval than the full dynamic model. Several quasi-longitudinal designs are discussed: overlapping designs (overlapping cohort design OCD and overlapping samples design OSD) as well as nonoverlapping designs up to the exclusively cross-sectional design. The use of the structural equation modeling (SEM) program Mx and continuous time state space modeling is recommended. Finally, a number of the quasi-longitudinal designs is empirically evaluated, comparing the results with those of the full-longitudinal design.
机译:在整个模型时间范围内收集纵向数据通常是估计带有时变参数的动态状态空间模型的合适方法。但是,在许多情况下,有可能并且最好从独立的受试者组中收集和组合数据,每组受试者的时间间隔都比完整的动态模型短。讨论了几种准纵向设计:重叠设计(重叠队列设计OCD和重叠样本设计OSD),以及不重叠设计(仅限于横截面设计)。建议使用结构方程建模(SEM)程序Mx和连续时间状态空间建模。最后,根据经验对许多准纵向设计进行了评估,将结果与全纵向设计的结果进行了比较。

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