As shown in Table 2b, all dichotomous and density measures were significantly associated with age of onset of regular drinking. That is, irrespective of whether FH is evaluated as a dichotomous or a density measure, it is associated with early onset of regular drinking. Further, FHDrPSND–AUDMaxSxCnt (b=3.05) and FHFirst–AUDDx (b=0.78) presented the most robust associations among density and dichotomous measures respectively. Overall, compared to dichotomous measures, all density measures presented greater magnitude of associations with age of onset of regular drinking.
