The plasma DPP-4 activity-time curves of the FDC and the separate tablets almost overlapped , leading to a GMR ( 90 % CI ) of the FDC to separate tablets for the plasma DPP-4 activity and its maximum inhibition of 1.00 ( 0.97-1 .04 ) and 0.92 ( 0.82-1 .05 ) , respectively .