| http://www.w3.org/ns/prov#value | - There were no significant differences between the patients in the 2 groups in demographic information or in the extent or the phenotype of disease: 58% were male, 85% were white, the age at enrollment was 13.3 ?? 2.9 (mean ?? SD, median 13.7, range 3.6???17.8 years), 93% had health insurance, including 12% with Medicaid.
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