An empirical evaluation of the use of fixed cutoff points in RMSEA test statistic in structural equation models
An empirical evaluation of the use of fixed cutoff points in RMSEA test statistic in structural equation models
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DOI：
10.1177/0049124108314720
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发表时间：
2008-05-01
影响因子：
6.3
通讯作者：
Paxton, Pamela
中科院分区：
文献类型：
--
作者：
Chen, Feinian;Curran, Patrick J.;Paxton, Pamela
本文是对结构方程模型中近似均方根误差（RMSEA）检验统计量作为拟合优度度量的固定截断点选择的实证评估。使用模拟数据，作者首先检查是否有任何使用通用截止值的经验证据，然后比较单独使用RMSEA点估计的实践与联合使用其相关置信区间的实践。研究结果表明，使用.05或任何其他值作为通用截止值来确定适当的模型拟合几乎没有经验支持，无论点估计值是单独使用还是与置信区间联合使用。作者的分析表明，为了达到一定水平的功效或I型错误率，临界值的选择取决于模型规格、自由度和样本量。
This article is an empirical evaluation of the choice of fixed cutoff points in assessing the root mean square error of approximation (RMSEA) test statistic as a measure of goodness-of-fit in Structural Equation Models. Using simulation data, the authors first examine whether there is any empirical evidence for the use of a universal cutoff, and then compare the practice of using the point estimate of the RMSEA alone versus that of using it jointly with its related confidence interval. The results of the study demonstrate that there is little empirical support for the use of .05 or any other value as universal cutoff values to determine adequate model fit, regardless of whether the point estimate is used alone or jointly with the confidence interval. The authors' analyses suggest that to achieve a certain level of power or Type I error rate, the choice of cutoff values depends on model specifications, degrees of freedom, and sample size.