A Comparison of Mean-Based and Quantile Regression Methods for Analyzing Self-Report Dietary Intake Data

Michelle L. Vidoni, Belinda M. Reininger, Min Jae Lee

Research output: Contribution to journalReview articlepeer-review

Abstract

In mean-based approaches to dietary data analysis, it is possible for potentially important associations at the tails of the intake distribution, where inadequacy or excess is greatest, to be obscured due to unobserved heterogeneity. Participants in the upper or lower tails of dietary intake data will potentially have the greatest change in their behavior when presented with a health behavior intervention; thus, alternative statistical methods to modeling these relationships are needed to fully describe the impact of the intervention. Using data from Tu Salud ¡Si Cuenta! (Your Health Matters!) at Home Intervention, we aimed to compare traditional mean-based regression to quantile regression for describing the impact of a health behavior intervention on healthy and unhealthy eating indices. The mean-based regression model identified no differences in dietary intake between intervention and standard care groups. In contrast, the quantile regression indicated a nonconstant relationship between the unhealthy eating index and study groups at the upper tail of the unhealthy eating index distribution. The traditional mean-based linear regression was unable to fully describe the intervention effect on healthy and unhealthy eating, resulting in a limited understanding of the association.

Original languageEnglish (US)
Article number9750538
JournalJournal of Probability and Statistics
Volume2019
DOIs
StatePublished - Jan 1 2019
Externally publishedYes

ASJC Scopus subject areas

  • Statistics and Probability

Fingerprint Dive into the research topics of 'A Comparison of Mean-Based and Quantile Regression Methods for Analyzing Self-Report Dietary Intake Data'. Together they form a unique fingerprint.

Cite this