As shown in Table 3b, in males, all dichotomous and density measures were significantly associated with early onset of regular drinking. Further, FHDrAR– AUDMaxSxCnt (b=−3.31) and FHFather–AUDDx (b=−0.81) presented the most robust associations among density and dichotomous measures respectively. In females too, all dichotomous and density measures were significantly associated with early onset of regular drinking. FHDrPSND–AUDMaxSxCnt (b=−3.87) and FHParent–AUDDx (b=−0.70) presented the most robust associations among density and dichotomous measures respectively. Importantly, in both males and females, all density (vs. dichotomous) measures presented associations of greater magnitude.