De fejlslåede behandlinger forårsaget af utilstrækkelig effekt var signifikant (p=0, 0003) hyppigere med atosiban (n=48, 14, 2%) end hos β- agonist- behandlede kvinder (n=20, 5, 8%).
Treatment failures caused by insufficient efficacy were significantly (p=0.0003) more frequent in atosiban (n=48, 14.2%) than in the β -agonist-treated women (n=20, 5.8%).