RESULTS	No significant differences were found between the placebo and omeprazole groups for rates of transfusion ( 302 ( 53 % ) placebo v 298 ( 52 % ) omeprazole ) , rebleeding ( 100 ( 18 % ) v 85 ( 15 % ) ) , operation ( 63 ( 11 % ) v 62 ( 11 % ) ) , and death ( 30 ( 5.3 % ) v 40 ( 6.9 % ) ) .\