Being African American was associated with an increased risk of becoming sexually active at age 16 or younger when compared with Caucasians, Hazard Ratio (HR) = 1.7, p<.001. Participants whose biological mother was a non-high school graduate or a high school graduate only were at greater risk of sexual debut at age 16 or younger compared with participants whose biological mother was a college graduate, HR = 1.6, p<.001 and HR = 1.3, p<.001, respectively. Participants whose biological mother had some college were not significantly different than participants whose biological mother was a college graduate. Participants whose biological mother was a teenager at the time of their birth were at greater risk of sexual debut at age 16 or younger than were participants whose mothers were 20 years of age or older at the time of their birth, HR = 1.4, p = .002.
