Clinical Characteristics and Prevalence of Comorbidities according to Metformin Use in Korean Patients with Type 2 Diabetes

Table 4

Difference of macrovascular complication of diabetes according to the use of metformin.

Variable	Metformin user	Metformin nonuser	P
Myocardial infarction, n (%)	9 (1.28%)	2 (1.32%)	1.000
Angina, n (%)	55 (7.58%)	15 (9.93%)	0.414
PTCA, n (%)	7 (1%)	1 (0.66%)	1.000
PCI with stent insertion, n (%)	27 (3.85%)	8 (5.3%)	0.374
CABG, n (%)	4 (0.57%)	0 (0%)	1.000
Peripheral artery disease, n (%)	4 (0.57%)	0 (0%)	1.000

PTCA, percutaneous transluminal coronary angioplasty; PCI, percutaneous coronary intervention; and CABG, coronary artery bypass graft surgery. Results are expressed as mean ± standard deviation or n (%). P value for the t-test or the chi-square test comparing the both groups with and without metformin.