Corresponding incidences of vomiting were 29.2 % for palonosetron and 48.0 % for ondansetron ( 95 % CI , -0.06 , 37.7 ; p = 0.057 ) , and 62.5 % and 56.0 % required additional rescue treatment , respectively ( 95 % CI , -25.9 , 12.9 ; p = 0.52 ) .