RESULTS	For the remaining treatment groups , the estimated pain relief proportions at 2 hours were 300 mg ( n = 38 ) 68.1 % , 400 mg ( n = 45 ) 48.2 % , 600 mg ( n = 40 ) 67.5 % , rizatriptan 10 mg ( n = 34 ) 69.5 % , and placebo ( n = 115 ) 46.3 % .\