PC program for obtaining orthogonal polynomial regression coefficients for use in longitudinal data analysis
نویسندگان
چکیده
منابع مشابه
PC program for obtaining orthogonal polynomial regression coefficients for use in longitudinal data analysis.
Much of longitudinal data analysis begins with dimensionality reduction, i.e., the replacement of the T observations x1 , x2 , …, xT on an individual taken at times t1 , t2 , …, tT (not necessarily equally spaced) by a smaller number, P, of parameters which are then used to describe and compare growth processes. We focus on the class of polynomial growth curve models for one-sample data matrice...
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ژورنال
عنوان ژورنال: American Journal of Human Biology
سال: 1992
ISSN: 1042-0533,1520-6300
DOI: 10.1002/ajhb.1310040317