Fig. 4

The forest plot of cardiac surgery patients with AF for the risk of stroke. OR, 2 (1.7–2.1, P < 0.0001), Heterogeneity (P = 0.77, I2 = 0%)
The forest plot of cardiac surgery patients with AF for the risk of stroke. OR, 2 (1.7–2.1, P < 0.0001), Heterogeneity (P = 0.77, I2 = 0%)