Calcium-vitamin D co-supplementation resulted in reduced serum insulin ( changes from baseline : -@ @ pmol/l , p = @ ) , HbA@c -LSB- -@ @ % ( -@ @ mmol/mol ) , p = @ -RSB- , HOMA-IR ( -@ @ , p = @ ) , LDL-cholesterol ( -@ @ mmol/l , p = @ ) and total/HDL-cholesterol levels ( -@ @ , p = @ ) compared with other groups .