Figure 3From: Meta-analysis of randomized controlled trials on magnesium in addition to beta-blocker for prevention of postoperative atrial arrhythmias after coronary artery bypass grafting Forest plot showing the effect on hospital LOS (days) after CABG. Values are given as the mean difference [95% confidence interval (CI)] as determined by the fixed effects model. Mag: magnesium; BB: beta-blocker.Back to article page