Table 2.
Summary of Kaplan-Meier Estimates for Stability (no change) of EEG Background Category at Each Timepoint Categorized as Four-Levels and Two-Levels.
| Duration Since Return of Circulation (hours) |
EEG Background Categorized as Four Levels | EEG Background Categorized as Two Levels | ||
|---|---|---|---|---|
| EEG Stablea (%) |
95% CI (%) |
EEG Stablea (%) |
95% CI (%) |
|
| 12 | 93 | 86–97 | 98 | 91–99 |
| 24 | 83 | 74–89 | 98 | 91–99 |
| 36 | 75 | 65–83 | 94 | 87–98 |
| 48 | 70 | 60–79 | 93 | 86–97 |
| 60 | 70 | 60–79 | 92 | 84–96 |
| 72 | 70 | 60–79 | 92 | 84–96 |
a
EEG stability is the equivalent of “survival” without a change in Background Category.