Table 2.

'Biochemical' and 'pregnancy' data for those trials that did not specifically report 'clinical pregnancy'

Trial	Pregnancy in antioxidant group	Pregnancy in control group
Ciotta 2011	4/16 (myo‐inositol + folic acid)	5/18 (folic acid)
Alborzi 2007	17/43 (pentoxifylline)	16/45 (placebo)
Mier‐Cabrera 2008	0/16 (vitamins C + E), at follow‐up over 9 months 3/16	0/18 (placebo), at follow‐up over 9 months 2/18
Mohammadbeigi 2012	9/22 (vitamin D)	7/22 (placebo)
Razavi 2015	6/32 (selenium)	1/32 (placebo)