EEG technologists identified SE and seizures with 99% negative predictive value, whereas the positive predictive values (PPVs) were 48% and 35%, respectively. Among 1528 EEG recordings, the PA and interrater agreement (IRA, AC1) values were as follows: status epilepticus (SE) and seizures, 97%, AC1 kappa = 0.97 interictal epileptiform discharges, 78%, AC1 = 0.63 and conclusion dichotomized as “normal” versus “pathological”, 83.6%, AC1 = 0.71. Interrater agreement (IRA) for predefined EEG pattern identification between EEG technologists and neurophysiologits was assessed using percentage of agreement (PA) and Gwet-AC1. A total of 8 EEG technologists and 5 certified neurophysiologists independently analyzed 20-min EEG recordings. We aim to prospectively investigate, in a large and heterogeneous population, the electroencephalogram (EEG)-reading performances of EEG technologists.
