This section outlines the data and code availability for generating subgroup forest plots using the ggplot2 package in R.

The data and code used in this analysis are derived from the article titled

"L-shaped Association Between Oxidative Balance Score and Vision-Related Functional Burden in Adults in the United States, NHANES 2005–2008."

The raw data can be downloaded from the National Health and Nutrition Examination Survey (NHANES) website

at https://www.cdc.gov/nchs/nhanes/.

The figure associated with this analysis is available in the supplementary materials of the article at

https://www.frontiersin.org/articles/10.3389/fnut.2025.1507889/full#supplementary-material.