Table 1 presents the weighted socio-demographic characteristics of the study sample. About half of the sample was male (51.3%) and the mean age was 15.2 years, with a larger proportion of youth aged 13–14 years (36.2%), and approximately equal distributions of youth aged 15 (20.5%), 16 (21.0%), and 17–18 (22.3%) years. The sample was comprised of 65.6% non-Hispanic Whites, 15.1% non-Hispanic Blacks, and 14.4% Hispanics. In terms of family characteristics, 84.5% of the sample had parents who had completed at least high school, 14.7% had a poverty index ratio at 1.5 or lower, nearly half of the sample resided in a metropolitan area, and 78.6% had parents who were married or cohabiting.
