There was a lack of effect of FF/VI ( 200/25g ) on QTcF ( Fridericia 's correction ) ; all time-matched mean differences from baseline relative to placebo ( 0-24h ) were < 5 ms , with upper 90 % confidence intervals ( CI ) of < 10 ms. At 800/100g , FF/VI had no significant clinical effect on QTcF except at 30min postdose when the 90 % CI was > 10 ms [ mean ( 90 % CI ) , 9.6 ms ( 7.2 , 12.0 ) ] .
