Association of income inequality with orthodontic treatment use

The Journal of the American Dental Association
Lisa SimonNathan Palmer

Abstract

Income inequality has been associated with worse oral health outcomes and reduced dental care use. It is unknown whether income inequality may motivate people to seek orthodontic treatment. This was a logistic mixed-effects model of deidentified claims from a private insurer in the United States with enrolled members having at least 1 orthodontic visit in the calendar year as the dependent variable. Total number of dental visits, age, and sex were individual-level covariates. Median household income, Gini coefficient, female population proportion, number of practicing dentists and orthodontists, population size, and population density were zip code-level covariates. A total of 1,860,709 people had at least 1 orthodontic claim. Adjusting for population demographics, the Gini index was significantly positively associated with orthodontic use for children but not for adults (odds ratio, 1.69 for children; P < .0001). Being female was the strongest predictor of orthodontic use for adults and was a significant predictor of use for children (odds ratio, 1.50 and 1.45, respectively; P < .0001). The Gini index is associated with orthodontic use in children in a privately insured population. Individual characteristics are more predictiv...Continue Reading

Citations

Aug 12, 2021·Systematic Reviews·Arash GhanbarzadeganDavid Brennan

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