Table 2.

Participant representation across all studies

	n	% (of randomised)	% (of reported)
All studies (n = 110)	24,397
Male	6,303	26	26
Female	17,712	73	73
Other	1	0	0
Not reported	381	2	n/a
Studies including both genders (n = 90)	20,252
Male	6,303	31	31
Female	13,738	68	69
Other	1	0	0
Not reported	210	1	n/a

Note. 19 studies either recruited women only as the target group or excluded men from participating. One study didn’t explicitly exclude men, but had a 100% female sample