Fig. 1.

Shared environmental portion of trivariate Choleksy model of adult household substance use, parental attitudes towards substance use, and lifetime substance use. C1 shared environmental factors common to household use, parental attitudes and substance use, C2 shared environmental factors common to parental attitudes and substance use, C3 shared environmental factors unique to substance use, C11 shared environmental path for household use, C12 shared environmental path between household use and parental attitudes, C13 shared environmental path between household use and substance use, C22 shared environmental path for parental attitudes, C23 shared environmental path between parental attitudes and substance use. C33 shared environmental path for substance use