title: Assessing treatment effects in caries trials using ordered categorical data.
abstract: Several methods are available for analyzing the results of caries trials when response to treatment is measured on an ordered categorical scale, such as Grainger 's Severity Index and modifications of it. These methods are applied to data from a randomized clinical caries trial. As the methods become more informative, they also become more difficult computationally. The phenomenon of reversals and the selection of patients for study are also discussed.
mesh_terms: D002648:Child; D002986:Clinical Trials as Topic; D003731:Dental Caries / Q000517:prevention & control*; D005069:Evaluation Studies as Topic; D006801:Humans; D009067:Mouthwashes; D010919:Placebos; D011379:Prognosis; D011897:Random Allocation; D012969:Sodium Fluoride / Q000008:administration & dosage; D013223:Statistics as Topic
chemical_list: D009067:Mouthwashes; D010919:Placebos; D012969:Sodium Fluoride