The D-cycloserine plus CT group showed a significant improvement in median TFI score ( -@ -LSB- @ % CI , -@ to -@ -RSB- ) and self-reported cognitive deficits ( -@ -LSB- @ % CI , -@ to -@ -RSB- ) , but the placebo group did not ( -@ -LSB- @ % CI , -@ to @ -RSB- and -@ -LSB- @ % CI , -@ to @ -RSB- , respectively ) .