A PC program for performing multigroup longitudinal comparisons using the potthoff-roy analysis and orthogonal polynomials.
A PC-program performing the Potthoff-Roy (PR) multigroup (G-sample) analysis of longitudinal data is described and illustrated.
This program and the underlying statistical model are useful in the comparison of several longitudinal samples.
Applications include the study of growth, development, adaptation, aging, and treatment effects (in short, any phenomenon in whi2c1h the passage of time is important) for which serial data are available.
Specifically, this method fits polynomials to the average growth curves in the samples, and tests hypotheses concerning the curves themselves and the individual coefficients of the polynomials.
The program features the utilization of orthogonal polynomial regression coefficients 2(OPRCs) and is written in GAUSS, a relatively inexpensive yet comprehensive matrix programming language.
Mots-clés Pascal : Etude longitudinale, Etude comparative, Population, Analyse multivariable, Courbe croissance, Polynôme orthogonal, Programme ordinateur, Enfant, Homme, Guatemala, Amérique Centrale, Amérique, Analyse statistique, Epidémiologie, Informatique biomédicale
Mots-clés Pascal anglais : Follow up study, Comparative study, Population, Multivariate analysis, Growth curve, Orthogonal polynomial, Computer program, Child, Human, Guatemala, Central America, America, Statistical analysis, Epidemiology, Biomedical data processing
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 92-0198184
Code Inist : 002B28F. Création : 199406.