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Table 1 List of factors used for the measurement of researchers' performance

From: Z factor: a new index for measuring academic research output

Parameters Definition Disadvantage
N The total number of publications Does not consider the quality of the study; co-authorship
I The impact factor of the journal where the paper is published Does not consider the productivity; co-authorship
H   Too early for young investigators
Z The new measure integrates both the impact factor of the journal and the productivity ---