Predicted frequency of alcohol-induced blackouts by early onset drinking. Covariate included in the model was sex; time-varying covariates included in the model were year-specific binge drinking. Frequency of alcohol-induced blackouts is based on a Likert scale (1 to 5). Early, Middle, and Late categories represent −1 standard deviation (SD), the mean, and +1 SD of the latent Early Onset factor, respectively.