Comparison 6. Recurrent miscarriage: 17‐α‐hydroxyprogesterone versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
6.1 Miscarriage (defined as delivery before 24 weeks of gestation)	1	50	Risk Ratio (M‐H, Fixed, 95% CI)	0.85 [0.28, 2.58]