Table 2.

Authorship type and gender of authors

Authorship type (number of publications in the category)	Gender of authors, count (%)			Significance P value
	Male only	Female only	Male and female
First author (n=2407)	1413 (58.7)	994 (41.3)	N/A	<0.001
First corresponding author (n=2371)	1565 (66.0)	806 (34.0)	N/A	<0.001
Last author (n=2406)	1853 (77.0)	553 (23.0)	N/A	<0.001
Joint first authors (n=458)	127 (27.7)	69 (15.1)	262 (57.2)	<0.001
Joint corresponding authors (n=169)	107 (63.3)	49 (29.0)	13 (7.7)	<0.001
Joint last authors (n=229)	108 (47.2)	23 (10.0)	98 (42.8)	<0.001

N/A, not applicable.