RESULTS	Of these , 244 subjects were randomized to a study arm ( IV acetaminophen 1000 mg [ n = 92 ] ; IV acetaminophen 650 mg [ n = 42 ] ; IV placebo 100 mL [ n = 43 ] ; or IV placebo 65 mL [ n = 67 ] ) and included in the ITT population , of whom 81.1 % ( 198/244 ) were women and 87.3 % ( 213/244 ) were white ; the mean ( SD ) age was 46.2 ( 12.51 ) years ( range , 18-78 years ) , and the mean weight was 174.3 ( 35.7 ) lb ( range , 103-284 lb ) .\