From: Intravenous magnesium prevents atrial fibrillation after coronary artery bypass grafting: a meta-analysis of 7 double-blind, placebo-controlled, randomized clinical trials
Variable
Magnesium (% (n))
Control (% (n))
x 2 value
P value
Total prevalence (% (n))
Diabetes mellitus [11, 24–26]
22.4 (68/304)
21.9 (70/319)
0.016
0.9
22.2 (138/623)
Hypertension [24–26]
31.2 (43/138)
27.1 (38/140)
0.543
0.5
29.1 (81/278)
β-blocker [21–25]
45.6 (146/320)
48.6 (152/313)
0.548
47.1 (298/633)