Table 2.

Characteristics of the large studies excluded from total percentage recruitment Calculation

Studies excluded	Number of participants	Percentage of total participants	Number of females
Kim et al. 2012 [30]	10,871,000	27.7%	4,862,670
Mathews et al. 2012 [31]	3,718,336	8.3%	1,463,276
Svedberg et al. 2019 [32]	736,102	1.5%	256,378
Arem et al. 2015 [33]	661,137	2.1%	369,652
Roberts et al. 2013 [34]	548,092	1.0%	168,227
Jin et al. 2019 [35]	501,690	1.4%	250,664
Hallmarker et al. 2016 [36]	204,038	0.4%	77,534
Belonje 2007 [37]	62,862	0.3%	47,775
Andersen et al. 2013 [9]	54,560	0.0%	5,443
Williams and Franklin 2013 [38]	46,907	0.2%	27,854