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Table 1: Sample demographics by group
Participant Characteristic Normal Finding Group (n = 1252) Incidental Finding Group (n = 148)
Age, y 14.72 ± 3.59 14.85 ± 3.92
Education, y 7.64 ± 3.50 7.81 ± 3.77
Sex, % 
    Male 48 49
    Female 52 51
Race, % 
    White 45 49
    African American 42 40
    Other 13 11

Participant Characteristic	Normal Finding Group (n = 1252)	Incidental Finding Group (n = 148)
Age, y	14.72 ± 3.59	14.85 ± 3.92
Education, y	7.64 ± 3.50	7.81 ± 3.77
Sex, %
Male	48	49
Female	52	51
Race, %
White	45	49
African American	42	40
Other	13	11