To further assess significant risk differences among the parental groups, six post hoc comparisons of all additional pairs of groups were performed. Participants with a biological alcohol dependent father only and those with two biological alcohol dependent parents were at greater risk of sexual debut at age 16 or younger compared with participants who had a second degree biological alcohol dependent relative (aunt, uncle, or grandparent) but whose biological parents were not diagnosed with alcohol dependence. No additional differences among parental groups were observed.
