Findings were similar in the full-analysis set ( 673 of 788 children in the aerosol group [ 85.4 % ] and 754 of 796 children in the subcutaneous group [ 94.7 % ] were seropositive at day 91 , a difference of -9.3 percentage points [ 95 % CI , -12.3 to -6.4 ] ) and after multiple imputation of missing results .