HbA1c improved in both groups ( IG , 9.21.5 % [ 77.017.0 mmol/mol ] vs. 8.71.5 % [ 71.617.0 mmol/mol ] [ P < 0.001 ] ; CG , 9.20.9 % [ 77.010.0 mmol/mol ] vs. 8.60.9 % [ 70.510.0 mmol/mol ] [ P < 0.001 ] , as did knowledge and self-care treatment adherence .