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Path analysis of PTSD symptoms as a mediator of the association between physical abuse (independent variable) and drug risk (dependent variable). Covariates are sex, age, and two ethnicity variables (Non-Hispanic Caucasian and African American) and are denoted by squares in the model. Cau = Dummy variable Non-Hispanic Caucasian. AA = dummy variable African-American. The indirect or mediated effect is bracketed and italicized. * denotes significant path coefficient.
