There was no difference in change in FEV@ at @ months ( @ L for LABA+ICS vs -@ L for tiotropium + ICS ; between-group difference , @ -LSB- @ % CI , -@ to @ -RSB- , P = @ ) and at @ months ( -@ L vs -@ L ; between-group difference , @ -LSB- @ % CI , -@ to @ -RSB- , P = @ ) .