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Developmental Trajectories of Positive Expectancies of Cannabis Use Effects Among Early Adolescents: Longitudinal Observational Study Using Latent Class Growth Analysis

Developmental Trajectories of Positive Expectancies of Cannabis Use Effects Among Early Adolescents: Longitudinal Observational Study Using Latent Class Growth Analysis

models with a greater number of classes (5-class to 7-class trajectory solutions) were explored, they yielded subgroups with minimal representation (ie, group size Latent class model fit comparisons for unconditional latent class growth analysis models regarding positive expectancies of cannabis use effects. a BIC: Bayesian information criterion. ba BIC: sample size–adjusted Bayesian information criterion. c AIC: Akaike information criterion. d LMR-a LRT: Lo-Mendell-Rubin adjusted likelihood ratio test; P value for k-

Weisiyu Abraham Qin, Dong-Chul Seo, Wura Jacobs, Sijia Huang, Kit K Elam

JMIR Public Health Surveill 2026;12:e85652