RESULTS	When the aspirin and placebo groups were combined , women with a twofold or greater reduction in thromboxane B2 levels had less preeclampsia , 1.9 % ( 6/314 ) versus 5.7 % ( 14/244 ) ( p = 0.016 ) , less preterm delivery ( 5.7 % vs 10.7 % , p = 0.032 ) , fewer small-for-gestational-age newborns , 9 of 314 ( 2.95 ) versus 17 of 244 ( 7 % ) ( p = 0.023 ) , and a higher mean birth weight , 3314 gm versus 3121 gm ( p = 0.0001 ) .\