JAMA - Journal of the American Medical Association
27.4(top 1%)
Impact Factor
29.9(top 1%)
extended IF
745(top 1%)
H-Index
9K
authors
85.4K
papers
4.2M
citations
23.7K
citing journals
579.5K
citing authors
Selected Period:
The graph shows the changes in the impact factor of JAMA - Journal of the American Medical Association and its the corresponding percentile for the sake of comparison with the entire literature. Impact Factor is the most common scientometric index, which is defined by the number of citations of papers in two preceding years divided by the number of papers published in those years.This graph shows how the impact factor of JAMA - Journal of the American Medical Association is computed. The left axis depicts the number of papers published in years X-1 and X-2, and the right axis displays their citations in year X.
How are inpact factors calculated?
The impact factor (IF) is calculated by counting citations from peer-reviewed journals only.
extended IF also counts citations from books and conference papers. However, no patent, abstract, working papers, online documents, etc., are covered.
