Table 1.

Bibliometric parameters as provided in the output by the Profiles Research Networking Software in its Bibliometric Summary Report.

Variable	Definition
Num Pubs	Number of recognized PubMed IDs, overall, for each journal, or for each year, as specified in the report subsections
First Year	Earliest article year
Last Year	Latest article year
Avg Authors	Average number of authors per article
Exp Authors	Expected number of authors, matched on journal and year
Ratio Authors	Ratio of the average number of authors to the expected number
Avg Cites All	Average number of times an article has been cited, including self-citations
Avg Cites	Average number of times an article has been cited, not including self-citations
Exp Cites	Expected number of times an article has been cited, not including self-citations, matched on journal and year
Ratio Cites	Ratio of average number of citations (no self-citations) to expected number, matched on journal and year
Exp Cites PT	Expected number of citations (no self-citations), matched on journal, year, and publication type
Ratio Cites PT	Ratio of average number of citations (no self-citations) to expected number, matched on journal, year, and publication type
H-Index	Hirsch-index (using total citations, including self-citations)
M-Index	Hirsch-index divided by the number of years since the first publication
%Pubs	The percentage of the total publications for each journal
Ratio Exp Pubs	The ratio of the number of publications in the field compared with the expected number, matched on year
Num Cites All	For each year, the number of times any article was cited, including self-citations, in that year
Num Cites	For each year, the number of times any article was cited, not including self-citations, in that year
Cum Pubs	For each year, the cumulative number of publications
Cum Cites All	For each year, the cumulative number of times any article was cited, including self-citations
Cum Cites	For each year, the cumulative number of times any article was cited, not including self-citations