Nature Impact Factor 2025 Comparison List. The nature index 2025 research leaders — previously known as annual tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to. We believe that impact factor is just one of a number of metrics that can be used to evaluate a journal, and a small number of highly cited papers can have a disproportionate effect on the mean.
The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. Nature if is decreased by a factor of 4.55 and approximate percentage.