5 Year Impact Factor & Ranking

2.0 1.5 1.0 0.5 1.718 2014 2015 2016 2017 2018 1.718 2014 2015 2016 2017 2018
  • 1 189
    #153
  • 1 191
    #121
  • 1 188
    #155
  • 1 194
    #123
  • 1 194
    #153
  • 1 196
    #126
  • 1 195
    #156
  • 1 197
    #118
  • 1 196
    #155
  • 1 197
    #116

About 5 Year Impact Factor & Ranking

Impact Factor based on 5 years of history. Copyright Clarivate Analytics.

Metrics

Year I.F. Clinical neurology Surgery
2018 1.718 155/196 116/197
2017 156/195 118/197
2016 153/194 126/196
2015 155/188 123/194
2014 153/189 121/191

Definition

Impact Factor

A base of five years may be more appropriate for journals in certain fields because the body of citations may not be large enough to make reasonable comparisons, or it may take longer than two years to publish and distribute leading to a longer period before others cite the work.

Actual value is intentionally only displayed for the most recent year. Earlier values are available in the Journal Citation Reports from Clarivate Analytics.

ISI ranking

Journals are often ranked by Impact Factor in an appropriate Clarivate Analytics subject category. As there are now two Impact Factors published – two-year and five-year Impact Factors – this rank may differ, so care is needed when assessing these ranked lists to understand which of the two metrics is being used. In addition, journals can be categorized in multiple subject categories, giving them different ranks for each subject. Consequently, a rank should always be in context to the subject category.