To complement the survival analyses, the mean interval between pairwise milestones was calculated (see Table 2) for the full sample as well as for respondents (n=494) who reached all five milestones. Table 3 presents adjusted mean intervals between milestones by sex, age of onset, and race. Telescoping is apparent among girls, with more rapid progression to more severe drinking milestones. Those with later onset showed more rapid progression to severe alcohol involvement. Blacks showed shorter intervals, reflecting more rapid progression to severe alcohol involvement, especially compared to Whites; Hispanics generally fell in the middle.
