Figure 1.
The IMB model.
Figure 2.
The preliminary IMB model predicting adolescent tobacco use among 16500 students.
Oval represent multiple-indictor latent variables, rectangle represent single-indicator observable variables. Single-headed arrow means regression path. Double-headed arrow mean correlations. Regression coefficient are standardized (*means P<0.001). Dotted line indicates non-significant path from original IMB model.