Atrial fibrillation in hypertrophic cardiomyopathy: prevalence, clinical correlations, and mortality in a large high-risk population.

The association remained highly significant after adjustments for age and sex (HR, 1.49; 95% CI, 1.28 to 1.72; P <0.001) and after serial additions of family history of SCD, NYHA functional class III to IV, and obstructive physiology in the model ( Table 4 ).

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