Satisfaction with treatment was reported by @ % ( @ % CI @ % to @ % ) , @ % ( @ % CI @ % to @ % ) , and @ % ( @ % CI @ % to @ % ) for ondansetron , metoclopramide , and placebo , respectively ; rescue medication was required by @ % ( @ % CI @ % to @ % ) , @ % ( @ % CI @ % to @ % ) , and @ % ( @ % CI @ % to @ % ) , respectively .