Ghosh D, Deisher T A, Ellsworth J L
Department of Biostatistics, University of Washington, Box 357232, Seattle, WA 98195-7232, USA.
J Pharmacol Toxicol Methods. 1999 Nov;42(3):157-62. doi: 10.1016/s1056-8719(00)00066-6.
Repeated measurements arise frequently in biomedical research. In many situations, the scientific question of interest concerns finding differences in the measurements between groups. This question is frequently addressed by using analysis of variance-type methods that fail to incorporate information regarding the repeated sampling design of the experiment. In this paper, we provide an introduction to nonstatisticians of two approaches for analyzing such data. The procedures can be performed by using available software. These methods are illustrated on data from a preclinical study conducted by ZymoGenetics.