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A, Baseline: age is significantly associated with rate of UBEs per day for 9 sites that used AVM system to intervene and prevent UBEs (Spearman ρ = −0.333, P < 0.001). B, Intervention: age is not associated with rate of UBEs per day for 9 sites that used AVM system to intervene and prevent UBEs (Spearman ρ = −0.075, P = 0.567).
