The coefficients of the count part suggest that at age 12 years, male respondents showed a greater level of HED than females among Caucasian (γi = .34, p < .01) and African American (γi = .36, p < .05) adolescents. Moreover, the coefficients of the count part suggested that adolescents’ access to alcohol at home was associated with the level of HED at age 12 years for African American respondents (γi = .22, p < .05) but not their Caucasian counterparts (γi = −.07, p > .05). However, access to alcohol at home was associated with an increase in level of HED as age increased yearly for Caucasian respondents (γs = .15, p < .01) but not African American respondents (γs = −.08, p > .05). Parental education was associated with a higher level of HED at age 12 but a lower level of HED as age increased yearly for Caucasian respondents (γi = −.13, p < .05, γs = .11, p < .05, respectively) but not African American respondents. Household structure was not associated with HED for either the Caucasian or African American subsamples.
