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Table 1 Demographic, clinical, and instrumental features at study entry

From: Development of a simple score to predict outcome for unresponsive wakefulness syndrome

Variable Awareness (number = 24) Unawareness (number = 32) Total (number = 56) t/ χ2 P
Age, years, mean ± SD 41.17 ± 15.9 39.66 ± 15.8 40.30 ± 15.6 0.353 0.726
Female/male 6/18 9/23 15/41 0.069 0.793
Time post onset, weeks, mean ± SD 6.08 ± 2.5 5.97 ± 2.0 6.02 ± 2.2 0.192 0.849
Type of BI, trauma/nontrauma 15/9 8/24 23/33 8.093 0.004
NSE (μg/L), <33/≥33 19/5 18/14 37/19 3.319 0.068
Pupillary light reflex, yes/no 23/1 31/1 54/2 0.043 0.836
Corneal reflex, yes/no 23/1 29/3 52/4 0.594 0.441
Motor response, flexor/extensor or absent 21/3 17/15 39/17 8.008 0.005
EEG reactivity, present/absent 16/8 8/24 26/30 9.944 0.002
Sleep spindles, present/absent 17/7 7/25 24/32 13.891 0.0002
N20, present/absent 15/9 8/24 23/33 8.0935 0.004
  1. BI, brain injury; NSE, neuron specific enolase; EEG, electroencephalogram.