Hazard models revealed that the estimated odds of attaining each milestone were greater for girls than for boys. For girls, the odds of having a drink were 1.37 (95% CI:1.24,1.50) the odds for boys. Likewise, the odds of getting drunk were 1.14 (95% CI:1.02,1.27) greater and the odds of monthly drinking were 1.44 (95% CI:1.29,1.60) greater, with boys reaching these milestones roughly one year after girls. The odds of weekly HED were 1.34 (95% CI:1.17,1.54) greater and the odds of daily HED were 1.40 (95% CI:1.15,1.72) greater than the odds for boys.
