Fig. 2

Kaplan-Meier (K-M) analysis illustrating recurrent stroke and all-cause mortality, along with the distribution of modified Rankin Scale (mRS) scores indicating poor prognosis in patients with NICE across four age groups at 3-months and 1-year follow-up, respectively. (A) K-M curve of recurrent stroke at 3 months; (B) K-M curve of recurrent stroke at 1 year; (C) K-M survival curve of all-cause mortality at 3 months; (D) K-M survival curve of all-cause mortality at 1 year; (E) Distribution of mRS scores for poor prognosis at 3 months; (F) Distribution of mRS scores for poor prognosis at 1 year. The four age groups: G1 ≤ 54 years; G2 55–64 years; G3 65–74 years; G4 ≥ 75 years