76dcd111ae44ac4aabcf7805acb43d38 future-03-00015-v2.pdf 388344ff01b176f10424c459195d43da73d78e56 future-03-00015-v2.pdf d1eb0121ee35c5e58a2d36a3d6db10ceec2bbe8c934d9d40c99d472f8e5a0d60 future-03-00015-v2.pdf Title: Changes in Alcohol, Cannabis, and Tobacco Use Before and After the COVID-19 Pandemic in Adolescents in Catalonia: A Repeated Cross-Sectional Study Subject: This study analyzes the impact of the COVID-19 pandemic on alcohol, cannabis, and tobacco use among adolescents aged 14–19 in Central Catalonia across three periods. Data were obtained from two waves of the DESKcohort project. The first wave (n = 4641) was pre-COVID-19 and the second wave was divided into two phases: post-COVID-19 with restrictions (n = 3478) and ppost-COVID-19 without restrictions (n = 2900). The prevalence of monthly binge drinking, cannabis use in the last 30 days, and daily tobacco use was calculated. Poisson regression models estimated adjusted prevalence ratios (aPR) comparing two post-pandemic phases to the pre-pandemic baseline. Binge drinking increased during the restrictions among girls [aPR = 1.5 (95%CI: 1.1–2.1)] and boys [aPR = 1.7 (95%CI: 1.3–2.3)]. Cannabis use decreased during restrictions and remained low post-pandemic, especially among girls [aPR = 0.6 (95%CI: 0.5–0.8)] and boys in the 4th Compulsory Secondary Education (CSE) [aPR = 0.4 (95%CI: 0.3–0.6)], and girls in the 2nd Post-Compulsory Secondary Education/Intermediate-Level Training Cycles (PCSE/ILTC) [aPR = 0.7 (95%CI: 0.6–0.9)]. Daily tobacco use also dropped among boys in the 4th year of CSE [aPR = 0.5 (95%CI: 0.3–0.7)] and girls in the 2nd year of PCSE/ILTC [aPR = 0.7 (95%CI: 0.6–0.9)]. The COVID-19 pandemic has created a unique opportunity to reassess patterns of adolescent substance use in a context of sudden social disruption. The findings highlight the need to denormalize alcohol and tobacco use and promote healthier adolescent behavior through education. Keywords: alcohol; cannabis; tobacco; binge drinking; adolescents; COVID-19; restrictions Author: Judit Rogés, Katherine Pérez, Xavier Continente, Juan Miguel Guerras, Brenda Robles, Inmaculada Mateo, Carmen Vives-Cases, Marina Bosque-Prous, Helena Gonzalez-Casals, Cinta Folch, Montse Bartroli, María José López, Esteve Fernández and Albert Espelt Creator: LaTeX with hyperref Producer: pdfTeX-1.40.25; modified using OpenPDF 1.4.2 CreationDate: Mon Aug 11 08:54:03 2025 CEST ModDate: Mon Aug 11 08:58:47 2025 CEST Custom Metadata: yes Metadata Stream: no Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 14 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 826595 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- HXWAID+URWPalladioL-Bold Type 1 Custom yes yes yes 95 0 KSMIJP+VnURWPalladioL Type 1 Custom yes yes yes 96 0 RTYNTL+URWPalladioL-Roma Type 1 Custom yes yes yes 97 0 ISRPUK+URWPalladioL-Ital Type 1 Custom yes yes yes 98 0 ILDAWM+CMSY10 Type 1 Builtin yes yes yes 99 0 JJHEAO+PalatinoLinotype TrueType WinAnsi yes yes no 210 0 JJHEAM+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 211 0 JJHEAO+PalatinoLinotype TrueType WinAnsi yes yes no 226 0 JJHEAM+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 227 0 Jhove (Rel. 1.28.0, 2023-05-18) Date: 2025-12-18 03:12:14 CET RepresentationInformation: future-03-00015-v2.pdf ReportingModule: PDF-hul, Rel. 1.12.4 (2023-03-16) LastModified: 2025-12-17 05:55:52 CET Size: 826595 Format: PDF Version: 1.5 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 438 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: ViewerPreferences: HideToolbar: false HideMenubar: false HideWindowUI: false FitWindow: true CenterWindow: false DisplayDocTitle: false NonFullScreenPageMode: UseNone Direction: L2R ViewArea: CropBox ViewClip: CropBox PrintArea: CropBox PageClip: CropBox PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Item: Title: Materials and Methods Children: Item: Title: Study Design Item: Title: Study Variables Children: Item: Title: Dependent Variables Item: Title: Independent Variables Item: Title: Data Analysis Item: Title: Results Item: Title: Discussion Item: Title: Conclusions Item: Title: References Info: Title: Changes in Alcohol, Cannabis, and Tobacco Use Before and After the COVID-19 Pandemic in Adolescents in Catalonia: A Repeated Cross-Sectional Study Author: Judit Rogés, Katherine Pérez, Xavier Continente, Juan Miguel Guerras, Brenda Robles, Inmaculada Mateo, Carmen Vives-Cases, Marina Bosque-Prous, Helena Gonzalez-Casals, Cinta Folch, Montse Bartroli, María José López, Esteve Fernández and Albert Espelt Subject: This study analyzes the impact of the COVID-19 pandemic on alcohol, cannabis, and tobacco use among adolescents aged 14–19 in Central Catalonia across three periods. Data were obtained from two waves of the DESKcohort project. The first wave (n = 4641) was pre-COVID-19 and the second wave was divided into two phases: post-COVID-19 with restrictions (n = 3478) and ppost-COVID-19 without restrictions (n = 2900). The prevalence of monthly binge drinking, cannabis use in the last 30 days, and daily tobacco use was calculated. Poisson regression models estimated adjusted prevalence ratios (aPR) comparing two post-pandemic phases to the pre-pandemic baseline. Binge drinking increased during the restrictions among girls [aPR = 1.5 (95%CI: 1.1–2.1)] and boys [aPR = 1.7 (95%CI: 1.3–2.3)]. Cannabis use decreased during restrictions and remained low post-pandemic, especially among girls [aPR = 0.6 (95%CI: 0.5–0.8)] and boys in the 4th Compulsory Secondary Education (CSE) [aPR = 0.4 (95%CI: 0.3–0.6)], and girls in the 2nd Post-Compulsory Secondary Education/Intermediate-Level Training Cycles (PCSE/ILTC) [aPR = 0.7 (95%CI: 0.6–0.9)]. Daily tobacco use also dropped among boys in the 4th year of CSE [aPR = 0.5 (95%CI: 0.3–0.7)] and girls in the 2nd year of PCSE/ILTC [aPR = 0.7 (95%CI: 0.6–0.9)]. The COVID-19 pandemic has created a unique opportunity to reassess patterns of adolescent substance use in a context of sudden social disruption. The findings highlight the need to denormalize alcohol and tobacco use and promote healthier adolescent behavior through education. 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