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Journal-level metrics

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Journal-level metrics Norsk flagg

These indicators offer a snapshot of a journal's market presence, scholarly reach including its peer-review rigor and ethical protocols. Because these indicators evaluate the publication venue in its entirety, they should never be applied to assess the quality of individual papers or specific researchers.

1. Journal Impact Factor (JIF - Clarivate)

Published annually by Clarivate, this metric establishes a benchmark for a journal's immediate visibility by tracking average citation rates over a two-year window. 

The calculation relies on a simple ratio:

The Numerator: The total volume of citations accumulated during the target year (e.g.2025) pointing back to any content the journal printed in the preceding two years (e.g. 2023-2024).

The Denominator: The total count of scholarly items (specifically original articles, review papers, and conference proceedings) published by the journal during that same two-year timeframe.

Advantages Limitations
  • aims to provide a quick indication of a journal’s citation impact and visibility

  • it is a standardised measure, allowing journals to be compared within the same field
  • tends to favour disciplines with higher citation rates

  • can be strongly influenced by a handful of outlier papers that receive massive citation spikes.

  • may be affected by editorial practices, such as self-citation, publishing more review articles, or increasing the number of non-scholarly items

  • the score is limited to journals and publications indexed in the Web of Science.

Read more about The Clarivate Impact Factor | The Journal Impact Factor Limitations

2. Five-Year Journal Impact Factor (Clarivate)

Operating on the same principle as the standard JIF, this variation extends the tracking window to encompass a five-year timeline rather than two.

Advantages Limitations
  • provides a broader view of journal visibility by considering citations over five years

  • reduces the effect of short-term fluctuations in citation patterns

  • particularly useful in fields where citations accumulate more slowly
  • does not account for differences in citation practices between disciplines

  • can be influenced by highly cited publications and editorial practices that increase citation counts

  • the score is limited to journals and publications indexed in the Web of Science

Read more about The Clarivate Impact Factor

3. CiteScore (Scopus)

CiteScore is a metric developed by Elsevier using data from the Scopus database. The score represents a simple ratio: the total citations received by a journal during a four-year period, divided by the total number of works published by the journal in that same timeframe.

Advantages Limitations
  • provides a broader view of citation impact by using a four-year citation window

  • includes a wider range of document types than the JIF

  • uses a transparent and verifiable framework, offering an alternative to the JIF
  • can be influenced by highly cited review articles

  • differences in citation practices between disciplines limit cross-field comparisons

  • the score is limited to publications indexed in Scopus

Read more about Scopus CiteScore

4. SCImago Journal Rank (SJR)

Powered by citation records from the Scopus database, this indicator calculates the average citation impact of a journal over a three-year window. Unlike standard citation counts, SJR applies a prestige-weighting algorithm: a citation originating from a top-tier journal contributes significantly more to the final score than a citation from a lesser-known publication.

For example:

an article in the target journal receives two citations:

  • Citation A is published in a world-renowned (e.g., Nature or The Lancet).
  • Citation B is published in a small regional journal with low readership.

While a traditional impact factor counts both of these as exactly "1 citation",  SJR treats them differently. Because of the prestige algorithm, Citation A will give the target journal a much larger boost in its SJR score than Citation B.

Advantages Limitations
  • considers both the number and influence (i.e. reputation of the citing journals) of citations received

  • provides a broader view of a journal’s position within citation networks
  • more complex than citation-count-based metrics, making it harder to calculate and interpret

Read more about Scimago Journal & Country Rank

5. Journal Acceptance Rate

This metric tracks the proportion of submitted articles that successfully pass peer review and are approved for printing. Generally, a lower percentage points to a highly competitive selection process and rigorous editorial criteria.There is no single database that lists acceptance rates for every academic journal but it can be found on journal and publisher homepages.

Advantages Limitations
  • provides an indication of a journal’s selectivity and competitiveness

  • can provide insight into the journal’s editorial and peer-review processes
  • acceptance rates vary by discipline, journal scope, and submission volume, limiting comparisons

  • a low acceptance rate does not necessarily indicate higher research quality

  • can reflect editorial policies and submission patterns rather than research quality

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Questions?

For questions about publication data, assistance with your own bibliometric analysis, or advice on managing researcher profiles and improving the visibility of your research, email us at forskning@ub.uit.no.

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