Dataset and Code for Polyphenol Supplementation Systematic Review and Meta‑Analysis

This repository contains all data, extraction sheets, statistical code, search files, screening logs, and meta‑analysis outputs used in the systematic review and meta‑analysis titled “Effects of Polyphenol Supplementation on Gut Microbiota Composition and Fecal Short‑Chain Fatty Acids: A Systematic Review and Meta‑Analysis of Randomized Controlled Trials.”

The dataset includes: – Full search strategies for all databases – RIS/CSV search exports – PRISMA screening logs and excluded‑study lists – Extracted SCFA and microbiota data – Study characteristics – Risk‑of‑bias assessments – GRADE evidence profiles – R scripts for effect‑size calculation, forest plots, subgroup analyses, and sensitivity analyses – All generated outputs (forest plots, funnel plots, subgroup analyses)

These materials allow full transparency, reproducibility, and verification of all analyses reported in the manuscript.