Table 2 Univariate analysis
From: Predictive value of EEG-awakening for behavioral awakening from coma
Characteristic | Awakening (n = 48) | Non-awakening (n = 58) | p value |
|---|---|---|---|
Age | 52.06 ± 22.05 | 49.88 ± 20.27 | 0.597 |
Gender | 0.665 | ||
 Male | 33 | 43 |  |
 Female | 15 | 15 |  |
Time from coma onset to EEG record, days, (median, IQR) | 7 (4–16) | 8 (4–20) | 0.593 |
Pupillary light reflex | 0.086 | ||
 Present | 45 | 48 |  |
 Absent | 3 | 10 |  |
Etiology | 0.149 | ||
 Anoxia | 4 | 10 |  |
 Trauma | 8 | 5 |  |
 Encephalitis | 8 | 17 |  |
 Stroke | 28 | 23 |  |
 Poisoning | 1 | 2 |  |
GCS score, mean ± SD | 6.29 ± 1.53 | 4.79 ± 1.34 | <0.0001 |
EEG-R | <0.0001 | ||
 Present | 41 | 15 |  |
 Absent | 7 | 43 |  |
Sleep spindles | <0.0001 | ||
 Present | 41 | 18 |  |
 Absent | 7 | 40 |  |
EEG-awakening | <0.0001 | ||
 Yes | 40 | 9 |  |
 No | 8 | 49 |  |