Fig. 2

Association of EEG reactivity on the first and second _stdEEGs with outcome. If more than one _stdEEG study was available, we collected data from the first and second studies. We classified patients as “preserved reactivity” when both _stdEEG were reactive to external stimuli, “absent reactivity” when none of the two _stdEEG was reactive, and “variable reactivity” in patients with discordant reactivity between _stdEEG studies (presence of reactivity followed by absence of reactivity, or vice versa). A poor outcome was defined by a score of 3–6 on the modified Rankin scale