Table 1.

Metrics for the bibliometric analysis.

Category	Analytical techniques	Metrics
Performance analysis	Publication-related metrics	•Total publications •Number of active years of publication •Productivity per active year of publication •Number of contributing authors •Sole-authored publications •Co-authored publications •Collaboration index •Collaboration coefficient
	Citation-and-publication-related metrics	•Total citations •Average citations •Number of cited publications •Proportion of cited publications •Citations per cited publication •Most influential publications •h-index
Science mapping	Co-authorship analysis	•Social interactions or relationships among authors •Authors and authors affiliation
	Co-word analysis	•Existing relationships among topics