Risk of Death and Heart Failure among Patients with Type 2 Diabetes Treated by Metformin and Nonmetformin Monotherapy: A Real-World Study

Figure 4

Associations of metformin with all-cause death, by age, gender, and comorbidities. Hazard ratios were estimated from multivariable Cox models controlling for age and coronary heart disease (imbalanced variables after PSM), except for subgroup analysis by coronary heart disease. CI = confidence interval.