Cannabis use, depression and suicidal ideation/attempt in adolescence:comorbidity and direction of associations in a contemporary Quebec cohort
Notice bibliographique
Résumé
Background: Given Canada’s recent cannabis legalization, its effects on depression and suicidal ideation/attempt in adolescence is of public health importance. Adolescence is a crucial developmental period marked with high consumption of cannabis, depression, and suicidal risk. Yet, most of the research available to date has focused on these associations in adulthood and few longitudinal studies have explored the direction of association between cannabis use, depression, and suicidal ideation/attempt in adolescence. Objective: The purpose of the present study was to explore both the concurrent and developmental sequence of association between cannabis use, depression, and suicidal ideation/attempt by examining the secondary substance use (depression/suicidal ideation/attempt precede cannabis use) and the secondary psychiatric disorder (cannabis use precedes depression/suicidal ideation/attempt) hypotheses. Clarifying the directionality of cannabis use and mental health outcomes will carry important implications for the treatment of adolescents presenting these conditions simultaneously.Methodology: Participants were drawn from the Quebec Longitudinal Study of Child Development, a contemporary birth cohort of Canadian adolescents followed over 20 years (n = 1606). We investigated concurrent associations between validated self-report measures of frequency of cannabis use, depression, and suicidal ideation/attempt at ages 15, 17 and 20 years, using logistic regressions. Longitudinal associations were assessed using cross-lagged panel analyses. Results: The prevalence of weekly cannabis use was 7.0% at age 15 years, 12.7% at age 17 years, and 15.6% at age 20 years. Adolescents who reported using cannabis weekly at one age were 15.81 to 11.31 (Odds Ratios [ORs]) times more likely to continue using cannabis over time. In our cross-lagged analysis, weekly cannabis use was associated with suicidal ideation/attempt, but not depression. Adolescents who used cannabis weekly at age 15 years were at a higher risk of suicidal ideation/attempt at age 17 years (OR = 2.19, 95% CI = 1.04–4.58). However, this association was fully explained by comorbid alcohol and other substance use (OR = 1.38, 95%CI = 0.52–3.20). Further, adolescents who reported having depression at 15 years were at higher risk of weekly cannabis use at 17 years, even after adjusting for comorbid alcohol and other substance use (OR = 2.30, 95% CI = 1.19–4.43). Those who used cannabis weekly at 17 years remained weekly users at 20 years (OR = 11.31, 95%CI = 5.20–24.61). Conclusion: The results of this study demonstrated that depression in adolescence predates weekly cannabis use, supporting the secondary substance use hypothesis. Evidence for the secondary substance use hypothesis has implications for the intervention plans of adolescents presenting with depression. Targeting symptoms of depression during mid-adolescence may prevent increases in cannabis use in late-adolescence. It has been demonstrated that weekly cannabis use is associated with aversive outcomes in young adulthood such as poorer mental health and impaired cognitive function
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,001 |
| Bibliométrie | 0,001 | 0,002 |
| Études des sciences et des technologies | 0,003 | 0,001 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».