Figure 1.

Conceptual path diagram of the moderated nonlinear factor analysis model for polysubstance use.

Note: Single-headed arrows linking the latent factor to the individual items represent the factor loadings; single-headed arrows linking the four predictor variables to the factor model indicate covariate effects on the factor mean and variance and on the item factor loadings and intercepts. This is a general depiction of the model and the specific effects identified in the final MNLFA model are described in the text.