{
  "abstract": "Adolescent cannabis use is associated with family and peer contexts, but whether these associations vary across historical periods is uncertain. We analyzed 12 repeated cross-sectional waves of the Chilean National School Population Survey on Drug Use (2001-2023; 636,008 records). Wave-specific Spearman correlations were estimated using complete cases, with sampling variances and within-wave covariance matrices obtained from 5,000 stratified course-cluster bootstrap replicates. Random-effects meta-analysis and meta-regression used Hartung-Knapp small-sample inference; subgroup interactions used wave-delete jackknife tests. Complete-series unweighted estimates were primary because final expansion weights were unavailable for three waves; supported-wave weighted analyses were sensitivity checks. Caregiver knowledge of whereabouts was inversely associated with cannabis use frequency (pooled ρ = -.200, 95% CI [-.212, -.189]), while perceived regular cannabis use among friends was more strongly and positively associated (pooled ρ = .427, 95% CI [.408, .445]). Neither overall historical trend was significant under small-sample inference (knowledge: β = .0014, p = .065; friends: β = -.0027, p = .109). Weighted sensitivity supported attenuation for knowledge (β = .0027, p = .007). Peer-use trends differed by sex and family structure, whereas knowledge trends did not. These repeated cross-sectional findings indicate strong, persistent associations but limited evidence for a uniform historical change. The subgroup variation and sensitivity dependence emphasize cautious interpretation.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "Mauro P. Olivera"
    },
    {
      "name": "Diego Manríquez Robles"
    },
    {
      "name": "Luis Sáenz-Herrera"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c9mzrsv91z2k2.bib",
  "cited_by": 0,
  "doi": "10.31234/osf.io/nqw32_v1",
  "fulltext_url": null,
  "id": "c9mzrsv91z2k2",
  "issns": [],
  "landing_url": "https://osf.io/preprints/psyarxiv/nqw32_v1/",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "bepress",
      "Adolescence"
    ],
    [
      "bepress",
      "Clinical Psychology"
    ],
    [
      "bepress",
      "Developmental Psychology"
    ],
    [
      "bepress",
      "Health Psychology"
    ],
    [
      "bepress",
      "Mental Health"
    ],
    [
      "bepress",
      "Social and Behavioral Sciences"
    ],
    [
      "bepress",
      "Social health"
    ],
    [
      "bepress",
      "Substance Abuse and Addiction"
    ],
    [
      "openalex",
      "2713|Substance Abuse Treatment and Outcomes"
    ]
  ],
  "openalex": "W7214527899",
  "pdf_url": "https://osf.io/nqw32/download",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c9mzrsv91z2k2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:17Z",
      "native_id": "nqw32",
      "source": "osf",
      "url": "https://osf.io/preprints/psyarxiv/nqw32_v1/"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "bepress:Clinical Psychology",
      "subfield": "psychiatry"
    }
  ],
  "title": "Historical Trends in Associations of Caregiver Knowledge of Whereabouts and Perceived Cannabis Use Among Friends With Cannabis Use Frequency Among Chilean Adolescents",
  "title_text": "Historical Trends in Associations of Caregiver Knowledge of Whereabouts and Perceived Cannabis Use Among Friends With Cannabis Use Frequency Among Chilean Adolescents",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:17Z",
  "url": "https://research.draconitic.com/paper/c9mzrsv91z2k2",
  "venue": "PsyArXiv",
  "versions": []
}