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Direct adjusted survival curves for ischemic-free survival as a function of the moyamoya comorbidities (A) (HR for idiopathic moyamoya: 3.71; 95% CI, 1.1–12.8; P = .03), sex (B) (HR for males: 0.65; 95% CI, 0.19–2.23; P = .49), and age group (C) (HR for older than 8 years: 0.62; 95% CI, 0.18–2.1; P = .44). Age as a continuous variable was not predictive of ischemic events. Age is represented in years.
