In the 4-week study ( n = 414 ) , 69.3 % responded and 45.5 % achieved remission with LDX ( all doses ) ; 37.1 % responded and 16.1 % achieved remission with placebo ; time ( 95 % CI ) to median clinical response ( all LDX doses ) was 15.0 ( 15.0 , 17.0 ) days and to remission was 31.0 ( 28.0 , 37.0 ) days ( P < .0001 overall ) .
