Beniczky, S; Aurlien, H; Franceschetti, S; Martins da Silva, A; Bisulli, F; Bentes, C; Canafoglia, L; ... Arzimanoglou, A; + view all Beniczky, S; Aurlien, H; Franceschetti, S; Martins da Silva, A; Bisulli, F; Bentes, C; Canafoglia, L; Ferri, L; Krýsl, D; Peralta, AR; Rácz, A; Cross, JH; Arzimanoglou, A; - view fewer (2020) Interrater agreement on classification of photoparoxysmal electroencephalographic response. Epilepsia , 61 (9) e124-e128. 10.1111/epi.16655.

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Abstract

Our goal was to assess the interrater agreement (IRA) of photoparoxysmal response (PPR) using the classification proposed by a task force of the International League Against Epilepsy (ILAE), and a simplified classification system proposed by our group. In addition, we evaluated IRA of epileptiform discharges (EDs) and the diagnostic significance of the electroencephalographic (EEG) abnormalities. We used EEG recordings from the European Reference Network (EpiCARE) and Standardized Computer-based Organized Reporting of EEG (SCORE). Six raters independently scored EEG recordings from 30 patients. We calculated the agreement coefficient (AC) for each feature. IRA of PPR using the classification proposed by the ILAE task force was only fair (AC = 0.38). This improved to a moderate agreement by using the simplified classification (AC = 0.56; P = .004). IRA of EDs was almost perfect (AC = 0.98), and IRA of scoring the diagnostic significance was moderate (AC = 0.51). Our results suggest that the simplified classification of the PPR is suitable for implementation in clinical practice.

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