Table 1. Demographics of the analysis sample at baseline prior to multiple imputation procedures.

Analysis Sample Size	1511
Mean Adolescent Age at Time 1 (in years)	14.01 (1.23)
Adolescent Gender (% male)	47.72%
Adolescent Race/Ethnicity	56.12% White 35.94% African American 6.55%‘Other Race’ 1.39% Missing
Family Structure (% One-Parent Households)	29.91% 6.68% Missing
Parent Education	5.36% Less than high school 19.06% High school graduate 13.17%Vocational or business school 9.99% Some college 23.43% Graduated from college 9.46% Graduate or professional school after college 19.52% Missing
Mean frequency of drinking	0.42 (1.02)
Mean frequency of drinking 3-4 drinks in a row	0.18 (0.65)
Mean frequency of drinking 5 or more drinks in a row	0.13 (0.59)
Mean frequency of being drunk	0.17 (0.65)
Mean alcohol-related consequences	0.05 (0.17)
Adolescents who reported at least one alcohol-related consequence	9.76%