Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Miscarriage rates
Systematic review	98 women Data from 1 RCT	Proportion of women who had a miscarriage 13/47 (28%) with low-dose aspirin (75 mg/day) 11/51 (22%) with low-dose aspirin plus low molecular weight heparin	RR 1.28 95% CI 0.64 to 2.56		Not significant