期刊名称：Journal of Modern Applied Statistical Methods
出版年度：2010
卷号：9
期号：2
页码：9
出版社：Wayne State University
摘要：Two longitudinal regression models, one parametric and one nonparametric, are developed to reduce selection bias when analyzing longitudinal health data with high mortality rates. The parametric mixed model is a two-step linear regression approach, whereas the nonparametric mixed-effects regression model uses a retransformation method to handle random errors across time.
