Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Miscarriage rates
Systematic review	71 women 3 RCTs in this analysis	Proportion of women who had a miscarriage 10/37 (27%) with low-dose aspirin (50–81 mg/day) 8/34 (24%) with control	RR 1.05 95% CI 0.66 to 1.68		Not significant