Table 1.

Demographic Characteristics of T1 Sample (N = 216)

Variable	N (%) or Mean (SD)
Male sex, n (%)	157 (72.7)
Age, y, mean (SD)	4.26 (0.48)
Race, n (%)
White	126 (58.2)
Black	27 (12.4)
Asian	23 (10.6)
> 1 race	40 (18.8)
Hispanic	67 (31.2)
SEI score, mean (SD)	58.85 (16.31)
Maternal education, n (%)	(N = 214)
< 12 years of schooling	9 (4.2)
High school graduate	28 (13.1)
1- to 3-year college	70 (32.7)
College graduate	61 (28.5)
Graduate degree	46 (21.5)

Abbreviations: SD, standard deviation; SEI, socioeconomic index.