The HbA1c levels decreased significantly from baseline to six months in the low-carbohydrate diet group ( baseline 7.60.4 % , six months 7.00.7 % , p = 0.03 ) but not in the calorie-restricted group ( baseline 7.70.6 % , six months 7.51.0 % , n.s. ) , ( between-group comparison , p = 0.03 ) .