A PC program for growth prediction in the context of Rao's polynomial growth curve model.
We consider the problem of growth prediction in the context of Rao's [1] one-sample polynomial growth curve model and provide a PC program, written in GAUSS, to perform the associated computations. Specifically, the problem considered is that of estimating the value of the measurement under consideration for a "new" individual at the Tth time point given measurements on that individual at T-1 previous points in time and the values of the measurement on N "similar" individuals at all T time points. The times of measurement t1, t2, . . ., tT need not be equally spaced, but we assume that each of the N individuals comprising the normative sample were measured at these times. The method and the program are illustrated using the leave-one-out method on a sample of N = 12 male rhesus monkeys whose mandibular ramus height was measured five times at yearly intervals.
Schneiderman
E D
ED
Department of Oral and Maxillofacial Surgery, Baylor College of Dentistry, Dallas, TX 75246.
Willis
S M
SM
Kowalski
C J
CJ
Ten Have
T R
TR
D000818:Animals; D005069:Evaluation Studies as Topic; D005544:Forecasting; D006128:Growth; D006801:Humans; D008137:Longitudinal Studies; D008253:Macaca mulatta; D008297:Male; D008838:Microcomputers; D015233:Models, Statistical; D015203:Reproducibility of Results; D012986:Software Validation