The least square ( LS ) mean change in HbA@c concentration from baseline was @ % ( SE @ ; -@ mmol/mol ) for the placebo group , -@ % ( @ ; -@ mmol/mol ) for the @ mg group , -@ % ( @ ; -@ mmol/mol ) for the @ mg group , -@ % ( @ ; -@ mmol/mol ) for the @ mg group , -@ % ( @ ; -@ mmol/mol ) for the @ mg group , and -@ % ( @ ; -@ mmol/mol ) for the @ mg group .