Least squares mean SE HbA@c change from baseline to the primary end point was -@ @ % ( -@ @ mmol/mol ) for dulaglutide @ mg , -@ @ % ( -@ @ mmol/mol ) for dulaglutide @ mg , -@ @ % ( -@ @ mmol/mol ) for exenatide , and -@ @ % ( -@ @ mmol/mol ) for placebo .