Implementation of exact and approximate randomization tests for polynomial growth curves.
Two stand-alone, menu-driven PC programs, written in GAUSS386i, which compare groups of growth curves in a completely randomized design using either (a) exact or (b) approximate randomization tests, are described, illustrated, and made available to interested readers. The programs accommodate missing data in the context of studies planned to have common times of measurement, but where some of the measurement sequences are incomplete. The measurement whose growth is being monitored need not have a Gaussian distribution. We consider the hypothesis that the mean growth curves in G groups are the same; and either compute the exact P value (exact test), or estimate, and provide a confidence interval for, the P value (approximate test).
Department of Oral and Maxillofacial Surgery and Pharmacology, Baylor College of Dentistry, Dallas, TX 75266-0677.
E D
ED
Schneiderman
S M
SM
Willis
C J
CJ
Kowalski
I Y
IY
Guo
D000465:Algorithms; D000818:Animals; D001827:Body Height / Q000502:physiology; D002508:Cephalometry; D002648:Child; D016001:Confidence Intervals; D005006:Ethnicity; D006128:Growth / Q000502:physiology*; D006801:Humans; D008137:Longitudinal Studies; D008253:Macaca mulatta; D008297:Male; D008334:Mandible / Q000033:anatomy & histology / Q000254:growth & development; D008954:Models, Biological; D015233:Models, Statistical; D011897:Random Allocation; D012923:Social Class; D012984:Software