Compared with sensor-augmented pump therapy , CLC improved significantly time spent between 80 and 140mg/dL ( 54.5 % vs. 32.2 % ; P < 0.001 ) and between 70 and 180mg/dL ( 85.4 % vs. 59.1 % ; P < 0.001 ) ; CLC reduced the mean glucose level at 07:00 h ( 119.3 vs. 152.9 mg/dL ; P < 0.001 ) and overnight mean glucose level ( 139.0 vs. 170.3 mg/dL ; P < 0.001 ) using a marginally lower amount of insulin ( 6.1 vs. 6.8 units ; P = 0.1 ) .