Figure 3From: Association of metformin with lower atrial fibrillation risk among patients with type 2 diabetes mellitus: a population-based dynamic cohort and in vitro studiesAF-free survival rate (n = 645,710) for diabetic patients with and without metformin use. AF = atrial fibrillation. Solid line is for the metformin users and broken line is for the non-users (p < 0.0001).Back to article page