Low-dose aspirin for the prevention of preterm delivery in nulliparous women with a singleton pregnancy (ASPIRIN): a randomised, double-blind, placebo-controlled trial.
【主な結果】
* Preterm birth before 37 weeks
668 (11·6%) of the women who took aspirin
754 (13·1%) of those who took placebo
RR 0·89 (95% CI 0·81 to 0·98), p=0·012