Table 4
Sensitivity and subgroup analysis
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

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

Wu et al. BMC Cardiovascular Disorders 2013 13:5   doi:10.1186/1471-2261-13-5

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