Research Article

Association between Metformin Use and Coronary Artery Calcification in Type 2 Diabetic Patients

Table 2

The characteristics of included patients according to CAC scores.

VariablesCAC scores (before PSM)CAC scores (after PSM)
() () value () () value

Age<0.001<0.001
BMI0.8860.987
Male gender143 (63.27%)85 (59.44)0.460119 (63.64%)62 (61.39%)0.706
Smoking77 (34.07%)58 (40.56)0.20768 (36.36%)45 (44.55%)0.174
DM duration9.50 (4.00, 5.00)10.00 (3.00,15.00)0.8149.00 (4.00, 15.00)10.00 (3.00, 15.00)0.993
HTN149 (65.93%)107 (74.83)0.071119 (63.64%)72 (71.29%)0.190
HTN duration5.00 (0.00, 15.00)10.00 (0.00, 20.00)0.0025.00 (0.00, 15.00)8.00 (0.00, 15.00)0.087
HbA1c (%)7.4 (6.7, 8.3)7.4 (6.8, 8.2)0.7907.40 (6.70-8.25)7.45 (6.90-8.20)0.456
eGFR (mL/min/1.73 m2)95.70 (88.02, 104.88)91.75 (81.47, 98.46)<0.00197.40 (89.74, 105.80)92.46 (85.55, 99.03)<0.001
FBG (mmol/L)7.04 (5.91, 8.90)6.82 (5.44, 8.39)0.2207.00 (5.93-8.94)6.82 (5.38-8.35)0.205
Ca (mmol/L)0.9630.924
P (mmol/L)0.1510.399
LDL-C (mmol/L)2.27 (1.70, 2.85)2.25 (1.60, 2.82)0.6032.23 (1.71-2.88)2.27 (1.58-2.97)0.848
HDL-C (mmol/L)1.09 (0.81, 1.28)1.03 (0.89, 1.27)0.2671.11 (0.92-1.29)1.03 (0.88-1.27)0.158
TG (mmol/L)1.41 (0.99, 2.04)1.39 (0.97, 1.88)0.4971.50 (1.00-2.06)1.56 (0.98-2.00)0.995
Metformin107 (47.34%)43 (30.07%)0.001107 (57.22%)43 (42.57%)0.018
Sulfonylureas82 (36.28%)54 (37.76%)0.77468 (36.36%)38 (37.62%)0.832
Glinides33 (14.60%)22 (15.38%)0.83731 (16.58%)17 (16.83%)0.956
GI85 (37.61%)64 (44.76%)0.17365 (34.76%)37 (36.63%)0.751
TZD10 (4.42%)6 (4.29%)0.9167 (3.74%)5 (4.95%)0.857
DPP4 inhibitor5 (2.21%)2 (1.40%)0.7114 (2.14%)0 (0.00%)0.341
Insulin47 (20.80%)33 (23.07%)0.60536 (19.25%)21 (20.79%)0.754
Statins62 (27.43%)54 (37.76%)0.03753 (28.34%)44 (43.56%)0.009
Antiplatelets59 (26.11%)58 (40.56%)0.00448 (25.67%)42 (41.58%)0.005

BMI: body mass index; DM: diabetes mellitus; GI: glucosidase inhibitors; HTN: hypertension; eGFR: estimated glomerular filtration rate; FBG: fasting blood glucose; Ca: calcium; P: phosphorus; LDL-C: low-density lipoprotein cholesterol; HDL-C: high-density lipoprotein cholesterol; TG: triglyceride; DPP4: dipeptidyl peptidase-4; TZD: thiazolidinediones; PSM: propensity score match.