This paper is in the following e-collection/theme issue:

Longitudinal and Cohort Studies in Public Health (421) Public (e)Health, Digital Epidemiology and Public Health Informatics (1031) Substance Abuse (536) Opioid and Related Substance Misuse (203) Substance and Alcohol Abuse in Adolescence (135)

Published on in Vol 12 (2026)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/85652, first published .
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

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

Authors of this article:

Weisiyu Abraham Qin1 Author Orcid Image ;   Dong-Chul Seo2 Author Orcid Image ;   Wura Jacobs2 Author Orcid Image ;   Sijia Huang3 Author Orcid Image ;   Kit K Elam2 Author Orcid Image
Article Authors Cited by Tweetations Metrics

Weisiyu Abraham Qin   1 , MPH, MHA, PhD ;   Dong-Chul Seo   2 , PhD ;   Wura Jacobs   2 , PhD ;   Sijia Huang   3 , PhD ;   Kit K Elam   2 , PhD

1 Center for Tobacco Control Research and Education, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, United States

2 Department of Applied Health Science, School of Public Health, Indiana University Bloomington, Bloomington, IN, United States

3 Department of Applied Psychology in Education and Research Methodology, School of Education, Indiana University Bloomington, Bloomington, IN, United States

Corresponding Author:

  • Weisiyu Abraham Qin, MPH, MHA, PhD
  • Center for Tobacco Control Research and Education
  • Cardiovascular Research Institute, University of California, San Francisco
  • 530 Parnassus Ave., Ste 366
  • San Francisco, CA 94143
  • United States
  • Phone: 1 4155023083
  • Fax: 1 4155149345
  • Email: weisiyu.qin@ucsf.edu