The authors should be commended for an excellent study. NHLBI's Working Group on Screening for Sudden Cardiac Death in the Young recommended the need for prospective, population-based studies to better understand the incidence and etiology of these events in young people. This study is an important step toward that goal.
In the study, I did not see information about the race/ethnicity of the decedents. Also, the prevalence of hypertrophic cardiomyopathy as a cause of SCD was relatively low (less common than myocarditis) and there was no mention of anomalous aortic origin of a coronary artery as a potential cause of SCD. This leads to the question of how generalizeable is this data to the US population?
Disclosure: The views expressed are those of the author and not necessarily those of the National Heart, Lung, and Blood Institute.