Log-linear model selections in a rural dental health study.
This field study sought to measure the effects of dental delivery and school-based, dental health education on use of dental health care by children in grades K-6. We attempted to control for two potential confounding factors by an approximate randomization of children into treatment groups with stratification on grade and initial oral disease levels. A backward elimination log-linear model selection procedure for the 5-factor classification permitted tests for higher-order interaction, namely effect-modification, confounding and collapsibility. We found that the effect of dental health education on use of dental care depended on the mode of dental delivery.
D002648:Child; D003729:Dental Care / Q000706:statistics & numerical data*; D003753:Dental Health Surveys; D004812:Epidemiologic Methods; D006267:Health Education, Dental; D006801:Humans; D008962:Models, Theoretical; D010414:Pennsylvania; D012423:Rural Health