"As Mendeley readership counts seems to be the
most closely related to citation counts in comparison to other altmetrics, this
paper proposes the hmen index as a variant of the
citation-based h index which takes into account Mendeley readership
counts...In order to find
out about the reliability of the hmen index as an indicator to assess
scholarly impact, a correlation analysis between the indices has been
conducted. Furthermore, the index values were divided by the scientific ages of
the authors in order to obtain time-oriented h and hmen values
which make a comparison of authors with different scientific ages possible.
The hmen index was found to have very strong positive and highly
significant correlations of around 0.95 with each of the h indices" https://link.springer.com/article/10.1007/s11192-018-2882-8