title: Testing equality of treatment variances in a two-by-two crossover study.
abstract: Comparative clinical trials are usually conducted to compare the means associated with the treatments. However, it is often also of interest to compare the variances. Here the problem of testing the equality of the variances associated with two treatments in a two-by-two crossover design is examined.
authors.affiliation: Janssen Research Foundation Inc. Piscataway, New Jersey 08855-3998.
authors.forename: D R
authors.initials: DR
authors.lastname: Bristol
mesh_terms: D000704:Analysis of Variance; D002986:Clinical Trials as Topic; D005541:Forced Expiratory Volume / Q000187:drug effects; D006454:Hemoglobins / Q000187:drug effects; D006801:Humans; D015233:Models, Statistical; D009910:Oral Hygiene; D011336:Probability; D012107:Research Design
chemical_list: D006454:Hemoglobins