Table I.

Details of the demographics of the sample (n=50)

Variable	Statistics
Number of probands	31
Gender of all 50 Parents	Female=30 Male=20
Ages of the 50 Parents (in years)
Males	25–39= 9, 40–54= 11
Females	25–39= 17, 40–54= 13 Fisher’s exact test p>0.05
Race/ethnicity of the 50 parents (self-reported)	Caucasian= 86% Black= 2% Asian= 8% Other= 4% Hispanic/Latino= 10%
Age of the 31 children (mean±SD and minimum-maximum in years)	7.83±4.96 (1–18)
Duration of the 31 children’s illness (mean±SD and minimum-maximum in years)	5.89±4.64 (1–18)
Previous non-diagnostic WES in the 31 children	15/31, 48%
Self-identified primary parent contact for the UDN	Mother (34/50, 68%) Father (4/50, 8%) Both parents (12/50 24%)