Religious faith is indispensable in the socialization of adolescents as it provides emerging adults with a framework of guidelines that shape individual behavior. Numerous studies have shown that religious involvement is often associated with lower levels of substance use. However, existing research often treats religiosity as a homogeneous measure that fails to capture the complexity of an individual’s religiosity comprehensively. Little research has been done to examine the causal effects of religious belief on substance use. To bridge these gaps, we aim to establish the causal link between multidimensional religious profiles and illegal substance abuse among young people transitioning from adolescence to adulthood. To achieve these goals, we propose a fusion approach that integrates state-of-the-art techniques to analyze the multi-waves National Longitudinal Survey of Youth (NLSY97) data. We review three major threads of methods in causal inference with multidimensional treatments. Finally, we estimate the causal effects of multidimensional religious profiles on substance abuse through regression adjustment, inverse probability weighting, and nonparametric Bayesian modeling technique.
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