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Annual event rates for primary and secondary composite outcomes in patients with quantitative septal LGE above and below a 2.74 % threshold. Patients with septal LGE greater than 2.74 % had a significantly higher annual event rate than those without for the primary outcome (22.6 % versus 3.2 %, p < 0.0001), and secondary outcome (16.1 % versus 2.7 %, p < 0.0002). LGE = late gadolinium enhancement
