NF2 and meningioma: In univariate analyses, statistical associations were identified between worse prognosis and NF2 meningioma (HR:1.9, confidence interval [CI] 1.01–3.58, p = 0.04), STR (HR: 4.51, CI 2.46–8.25, p = 1.0 × 10–6), and Ki-67 index ≥ 4 (HR: 4.91, CI 2.7–8.95, p = 1.8 × 10–8) (Fig. 4).