{"doi":"10.1111/josh.12977","title":"Attitudes, Subjective Norms, and Perceived Behavioral Control Associated with Age of First Use of Cannabis among Adolescents","abstract":"BACKGROUND: Prevention of early age initiation of cannabis use is a national priority, highlighting the importance of identifying cannabis-specific attitudes, norms, and perceived behavioral control in relation to initiation age. METHODS: Data were from the NEXT Generation Health Study, a national longitudinal sample of US adolescents followed from 10th grade (N = 1850). Cannabis-specific attitudes, norms, and perceived behavioral control were assessed at 10th grade. Age of first use was reported retrospectively 2-3 years after high-school and participants were categorized as early initiators (<14 years; 3.8%), high-school (HS) initiators (14-18 years; 35.6%), post-HS initiators (>18 years; 8.3%), or never users (52.3%). RESULTS: Relative to never users, early initiators were more likely to endorse pro-use attitudes (AOR [adjusted odds ratio] = 2.39, 95% confidence interval [CI] = 1.27-4.50), less disapproving parental attitudes toward use (AOR = 2.50, 95% CI = 1.45-4.28), higher cannabis use among friends (AOR = 3.81, 95% CI = 2.21-6.60), and higher ease of access (AOR = 2.10, 95% CI = 1.14-3.87); HS initiators were similarly more likely to report less disapproving attitudes toward use (AOR = 1.55, 95% CI = 1.25-1.91), higher cannabis use among friends (AOR = 2.81, 95% CI = 2.18-3.65), and higher ease of access (AOR = 1.66, 95% CI = 1.21-2.28). CONCLUSIONS: Earlier cannabis initiation was associated with more favorable cannabis attitudes, subjective norms, and perceived behavioral control, highlight these variables as potential intervention targets.","journal":"Journal of School Health","year":2020,"id":101139,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":28,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9278,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":446851,"name":"Denise L. Haynie","orcid":"0000-0002-8270-6079","position":1,"is_corresponding":false},{"id":495555,"name":"Jeremy W. Luk","orcid":"0000-0002-9061-1555","position":2,"is_corresponding":false},{"id":495556,"name":"Kellienne R. Sita","orcid":"0000-0002-5583-4171","position":3,"is_corresponding":false},{"id":446852,"name":"Bruce G. Simons‐Morton","orcid":"0000-0003-1099-6617","position":4,"is_corresponding":false},{"id":495554,"name":"Liat Korn","orcid":"0000-0001-5688-8983","position":0,"is_corresponding":true}],"reference_count":52,"raw_metadata":null,"created_at":"2026-07-18T22:39:38.259162Z","pmid":"33216363","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}