AIC identifies optimal representation of longitudinal dietary variables

Journal of Public Health Dentistry
John VanBurenSteven M Levy

Abstract

The Akaike Information Criterion (AIC) is a well-known tool for variable selection in multivariable modeling as well as a tool to help identify the optimal representation of explanatory variables. However, it has been discussed infrequently in the dental literature. The purpose of this paper is to demonstrate the use of AIC in determining the optimal representation of dietary variables in a longitudinal dental study. The Iowa Fluoride Study enrolled children at birth and dental examinations were conducted at ages 5, 9, 13, and 17. Decayed or filled surfaces (DFS) trend clusters were created based on age 13 DFS counts and age 13-17 DFS increments. Dietary intake data (water, milk, 100 percent-juice, and sugar sweetened beverages) were collected semiannually using a food frequency questionnaire. Multinomial logistic regression models were fit to predict DFS cluster membership (n=344). Multiple approaches could be used to represent the dietary data including averaging across all collected surveys or over different shorter time periods to capture age-specific trends or using the individual time points of dietary data. AIC helped identify the optimal representation. Averaging data for all four dietary variables for the whole period ...Continue Reading

References

Dec 20, 1973·Experimental Brain Research·T AkaikeH Nakajima
Jul 28, 2001·Journal of Public Health Dentistry·S M LevyJ S Wefel
May 7, 2002·Journal of Public Health Dentistry·John J WarrenMichael J Kanellis
Sep 2, 2003·Pediatrics·Teresa A MarshallPhyllis J Stumbo
Dec 20, 2003·Journal of Public Health Dentistry·Steven M LevyBarbara Broffitt
May 23, 2006·Journal of Public Health Dentistry·John J WarrenMichael J Kanellis
Jan 2, 2007·The Journal of the American Dental Association·Teresa A MarshallSteven M Levy
Sep 23, 2010·Journal of Dental Research·C A PalmerA C R Tanner
May 28, 2013·Journal of the Academy of Nutrition and Dietetics·E Whitney EvansAviva Must
Jul 31, 2013·Journal of Public Health Dentistry·Barbara BroffittJoseph E Cavanaugh
Feb 14, 2014·Nature·Regina Nuzzo

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Citations

Jul 4, 2017·Community Dentistry and Oral Epidemiology·John J WarrenKarin Weber-Gasparoni
May 13, 2018·Journal of Public Health Dentistry·Alexandra M CurtisSteven M Levy

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