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

Figure 1

Estimated adjusted parameter of for study group (intervention vs. standard care) at each visit based on mean-based regression (red line) and quantile regression (black line with 95% confidence limits) by quantile levels of healthy (HEI) and unhealthy index (UNHEI). Adjusted for gender, age, diabetes, marital status, years in school, employment status, type of insurance, generation, and preferred language.