Fig. 2

a Estimated proportions of patients with headache (cutoff ≥ 2) by ER, ADM and ICU strata up to 6 months, b Estimated proportions of patients with headache (cutoff ≥ 2) by ADM and ICU strata up to 12 months, c Estimated proportions of patients with headache (cutoff ≥ 3) by ADM and ICU strata up to 12 months