Abstract
Parent-adolescent relationship (PAR) factors such as social support and negative interactions are associated with initiation of alcohol and marijuana use during adolescence. However, few studies have examined whether the relationship between PAR, especially the paternal role, and substance use onset varies by ethnicity. This is important given that ethnic group differences have been related to alcohol and marijuana use, cultural values and parenting. This study examines whether ethnicity moderates the prospective prediction of substance use onset by PAR factors. The sample comprised 124 adolescents who self-identified as Hispanic and 795 adolescents who self-identified as non-Hispanic Whites, and was drawn from an ongoing longitudinal survey on adolescent substance use. Discrete-time survival modeling was used to prospectively predict age at onset of substance use among participants who were substance-naïve at baseline. Interactions between ethnicity and PAR factors indicated that PAR factors had a larger influence on age of alcohol and marijuana onset for Hispanics than for Caucasians. Among Hispanics, greater social support from and greater negative interactions with the father-figure were more predictive of earlier onset of alcohol, and greater social support from the mother-figure was more predictive of later alcohol onset, compared to Caucasians. Similarly, greater negative interactions with the father-figure were more predictive of earlier onset of marijuana use among Hispanics than among Caucasians. These findings suggest the influence of PAR on alcohol and marijuana use onset may be larger for Hispanics than for Caucasians. Incorporating these parenting factors in substance use prevention programs advances public health in a culturally sensitive manner that is relevant to at-risk Hispanic adolescents.