Comparisons of two statistical approaches to study growth curves: The multilevel model and the latent curve analysis
- 1 January 1998
- journal article
- research article
- Published by Taylor & Francis Ltd in Structural Equation Modeling: A Multidisciplinary Journal
- Vol. 5 (3), 247-266
- https://doi.org/10.1080/10705519809540104
Abstract
This article compares two statistical approaches for modeling growth across time. The two statistical approaches are the multilevel model (MLM) and latent curve analysis (LCA), which have been proposed to depict change or growth adequately. These two approaches were compared in terms of the estimation of growth profiles represented by the parameters of initial status and the rate of growth. A longitudinal data set obtained from a school‐based substance‐use prevention trial for adolescents was used to illustrate the similarities and differences between the two approaches. The results indicated that the two approaches yielded very compatible results. The parameter estimates associated with regression weights are the same, whereas those associated with variances and covariances are similar. The MLM approach is easier for model specification and is more efficient computationally in yielding results. The LCA approach, however, has the advantage of providing model evaluation, that is, an overall test of goodness of fit, and is more flexible in modeling and hypothesis testing as demonstrated in this study.Keywords
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