Fig. 3

Performance of standard (_stdEEG) and frontal (_4-frontEEG) montages for prediction of 28-day mortality and 90-day poor functional outcome. The Synek score, determined by a trained intensivist on 4 frontal electrodes, was associated with 28-day mortality (AUC = 0.71, specificity 0.77 and sensitivity 0.57) and 90-day poor functional outcome (Rankin score ≥ 4) (AUC = 0.71, specificity 0.82 and sensitivity 0.40) with a precision comparable to an expert’s interpretation on 21 electrodes (AUC = 0.68 specificity 0.84 and sensitivity 0.45 and AUC = 0.66, specificity 0.85 and sensitivity 0.30, respectively)