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Table 4 Sensitivity and subgroup analysis

From: Meta-analysis of randomized controlled trials on magnesium in addition to beta-blocker for prevention of postoperative atrial arrhythmias after coronary artery bypass grafting

Intervention

RCTs (n)

OR

95% CI

P-value for heterogeneity

P-value for overall effect

Low dose of Mag

2

0.71

0.34-1.51

0.09

0.38

High dose of Mag

3

1.2

0.90-1.60

0.85

0.21

Sotalol

2

1.03

0.55-1.96

0.05

0.92

Other BBs

3

1.14

0.85-1.53

0.97

0.38

  1. Mag: magnesium; BBs: beta-blockers; RCTs: randomized controlled trials; OR: odds ratio; CI: confidence interval.