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.