Table 1.

Baseline demographics for total sample. Tabled values are mean (standard deviation) for age and sample size (percentage) for categorical variables.

Variable	Total sample (N = 4158)
Age	11.40 (0.69)
Ethnicity
Hispanic	635 (15.6%)
Non-Hispanic	3436 (84.4%)
Gender
Male	2162 (52.2%)
Female	1976 (47.8)
Race
American Indian/Alaskan Native	93 (2.2%)
Asian	101 (2.4%)
Black, non-Hispanic	157 (3.8%)
Combination/mixed	689 (16.6%)
Pacific Islander	22 (0.5%)
Unknown/not reported	387 (9.3%)
White, non-Hispanic	2696 (65.0%)