This study aimed to 1 document the prevalence of

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This study aimed to: 1) document the prevalence of gambling activities among a large sample of college-educated young adults; and 2) examine the independent relationships of several hypothesized risk factors with gambling and five measures of substance use based on two alternative structural models that account for their respective intermediary effects. We hypothesized that both direct and indirect effects would be observed, such that some risk factors would be shared by gambling and substance use simultaneously, while other risk factors would be uniquely associated with either gambling or substance use. 2. Methods 2.1. Study design Data were gathered as part of the College Life Study, a longitudinal study of health-risk behaviors among a cohort of 1,253 young adults, who were originally enrolled as first-year college students. Detailed methodological information has been published previously (Arria et al., 2008; Vincent et al., 2012). Briefly, in 2004, the incoming class of first-year students ages 17
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