Table 1.

Characteristics of the study group

SubgroupCases (n = 203)Controls (n = 414)
Ethnic background (n)
White137239
Hispanic66175
Age (mean ± SD)
White6.0 ± 4.810.6 ± 5.9
Hispanic6.8 ± 4.89.3 ± 5.2
Male/Female
White76/61126/113
Hispanic28/3886/89
Ancestry in Hispanics (%)
Native American41.948.7
European53.743.5
African4.47.8