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TABLE 3: Results of logistic regression analyses to predict dichotomized GOS outcomes at 6–12 mo
Variables Accuracy (%) Predictions χ² P Value
False-Positive (%) False-Negative Rate (%)
GCS score 75 0 100 5.2 .40
Days unconscious before MRS and days ventilated 78 3 80 4.5 .81
Days in coma, unconscious before MRS, and ventilated 80 7 60 8.4 .39
MRS ratios^* 
    Normal-appearing brain 85 3 50 10.7 .22
    Hemorrhagic brain 67 13 80 7.3 .50
    Total brain 85 3 50 5.4 .72
Total NAA/Cr, days unconscious before MRS and ventilated 88 3 40 11.2 .19
* Total mean NAA/Cr, NAA/Cho, and Cho/Cr.

Variables	Accuracy (%)	Predictions		χ²	P Value
Variables	Accuracy (%)	False-Positive (%)	False-Negative Rate (%)	χ²	P Value
GCS score	75	0	100	5.2	.40
Days unconscious before MRS and days ventilated	78	3	80	4.5	.81
Days in coma, unconscious before MRS, and ventilated	80	7	60	8.4	.39
MRS ratios^*
Normal-appearing brain	85	3	50	10.7	.22
Hemorrhagic brain	67	13	80	7.3	.50
Total brain	85	3	50	5.4	.72
Total NAA/Cr, days unconscious before MRS and ventilated	88	3	40	11.2	.19