# Guide to reading and interpreting Nature Index tables

Nature has published a guide explaining how to read its Nature Index tables, which rank countries and institutions by research output. The guide clarifies the tables' metrics and intended use. It matters because it helps readers interpret the rankings accurately and avoid misusing the data.

**Importance:** 2/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/d41586-026-03344-0) — 2026-11-04