Application of survival analysis to carious lesion transitions in intervention trials.


OBJECTIVE To demonstrate the usefulness of a survival-time regression model for the analysis of data from two 3-year trials of the caries-preventive effect of sugar-substituted chewing gums and fluoride toothpaste, carried out among 892 Lithuanian children. METHODS A caries onset was defined as a transition from sound to carious and a caries recovery was… (More)


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