Table 2 Primary and secondary outcomes by treatment groups

Outcomes*1st syringe/2nd syringe
Magnesium/ diazepam, n = 75Magnesium/ placebo, n = 75Placebo/ diazepam, n = 75Placebo/ placebo, n = 751st syringe Magnesium,    Placebo, n = 150    n = 1502nd syringe Diazepam,    Placebo, n = 150    n = 150
* Awakening was defined by the patient’s having comprehensible speech or following commands. “By 3 mo” indicates that the outcome was achieved at any time up until 3 months after the cardiac arrest. “At 3 mo” indicates the status of the patient at 3 months after the cardiac arrest. For analyses on days to awakening, death was a censoring event, and on days to death, awakening was a censoring event. Because outcomes were known for all 300 patients who were randomized, the number of patients in any cell can be calculated by multiplying the percent in the cell by the number at the head of the column.
By 3 mo
    Awake, %29.346.730.737.338.034.030.042.0
    Independent, %17.340.021.325.328.723.319.332.7
At 3 mo
    Independent, %17.334.717.325.326.021.317.330.0
    Dependent, %04.002.706.706.703.306.705.304.7
    Vegetative, %01.300.000.000.000.700.000.700.0
    Dead, %77.362.776.068.070.072.076.765.3
Days by which 25% of group awake (95% CI)1.67 (0.53, 2.81)0.58 (0.29, 0.87)0.89 (0.07, 1.71)0.87 (0.44, 1.30)0.80 (0.35, 1.25)0.88 (0.52, 1.23)1.13 (0.35, 1.91)0.69 (0.42, 0.96)
Unadjusted hazard ratio (95% CI)0.68 (0.39, 1.19)1.39 (0.84, 2.31)0.85 (0.49, 1.47)Reference1.06 (0.73, 1.55)Reference0.64 (0.44, 0.94)Reference
Adjusted hazard ratio (95% CI)1.10 (0.60, 2.04)1.14 (0.67, 1.94)0.95 (0.52, 1.73)Reference1.05 (0.71, 1.54)Reference0.97 (0.64, 1.45)Reference
Days by which 50% of group dead without awakening (95% CI)3.40 (2.65, 4.15)3.18 (2.44, 3.49)2.44 (1.38, 3.50)3.35 (2.13, 4.57)3.25 (2.78, 3.72)2.54 (1.89, 3.19)2.79 (2.14, 3.44)3.18 (2.34, 4.02)
Unadjusted hazard ratio (95% CI)0.91 (0.61, 1.35)1.13 (0.74, 1.75)1.19 (0.80, 1.77)Reference0.90 (0.68, 1.20)Reference0.97 (0.73, 1.29)Reference
Adjusted hazard ratio (95% CI)0.85 (0.54, 1.36)1.16 (0.74, 1.81)1.46 (0.94, 2.26)Reference0.84 (0.63, 1.14)Reference1.01 (0.74, 1.37)Reference