title: Sample sizes for repeated measurements in dichotomous data.
abstract: When the measurement of outcome varies within studied subjects and the cost of additional subjects is high, taking more than one measurement for each subject constitutes a useful alternative to increase the power or to reduce the total cost of the study. In this paper, I present sample size formulae for repeated measurements in dichotomous data under different situations. I also discuss optimal sample allocation for repeated measurements.
authors.affiliation: Department of Mathematical Sciences, College of Sciences, San Diego State University 92182-0314.
authors.forename: K J
authors.initials: KJ
authors.lastname: Lui
mesh_terms: D008390:Markov Chains; D015233:Models, Statistical; D015999:Multivariate Analysis; D011897:Random Allocation; D012494:Sampling Studies; D015983:Selection Bias; D013269:Stochastic Processes