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

JMIR Public Health Surveill · 2026 · PMC12788717 · PMID 41512198

Europe PMC DOI

hedged sentences

0.0010

closest p · 0.0× alpha

0.0700

boldest claim

The sentences

an increasing trendP <.001actually significant

The positive expectancies of cannabis use effects score measured among the participants demonstrated an increasing trend (T1: mean 6.41, SD 2.85; T2: mean 7.20, SD 2.93; T3: mean 7.96, SD 2.99; P <.001).

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approached significanceP =.07so close (0.05 < p ≤ 0.1)

The low-increasing class exhibited no significant associations across time points, though family conflict at T3 approached significance (β=0.038, SE=0.021; P =.07).

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