ArticleAddiction (Abingdon, England)2020
Trends in marijuana use in two Latin American countries: an age, period and cohort study.
Article in Addiction (Abingdon, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 24 citations in OpenAlex.
- Understanding the online landscape of cannabis discourse: a Twitter analysis.Frontiers in public health · 2025Article
- Global burden and trends of testicular cancer in adolescents and young adults from 1990 to 2021, with predictions to 2035.Scientific reports · 2024Article
- An age-period-cohort approach to studying long-term trends in obesity and overweight in England (1992-2019).Obesity (Silver Spring, Md.) · 2023Article
- Burden of disease due to amphetamines, cannabis, cocaine, and opioid use disorders in South America, 1990-2019: a systematic analysis of the Global Burden of Disease Study 2019.The lancet. Psychiatry · 2023Article
- Trends in cannabis or cocaine-related dependence and alcohol/drug treatment in Argentina, Chile, and Uruguay.The International journal on drug policy · 2022Article
- Cannabis Use Patterns and Related Health Outcomes Among Spanish Speakers in the United States and Internationally.The Yale journal of biology and medicine · 2022Article
- Age-specific rates of onset of cannabis use in Mexico.Addictive behaviors · 2021Article
- Relationship between Everyday Discrimination and Substance Use among Adolescents in Northern Chile.International journal of environmental research and public health · 2021Article
- Trends in youth cannabis use across cannabis legalization: Data from the COMPASS prospective cohort study.Preventive medicine reports · 2021Article
- Cannabis use among Norwegian university students: Gender differences, legalization support and use intentions, risk perceptions, and use disorder.Addictive behaviors reports · 2021Article
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Corrections and comments
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Authors and funding
6 authors at 3 institutions in 3 countries.
Funding
Abstract
BACKGROUND AND
aimsUruguay and Chile have the highest levels of marijuana use in Latin America, and have experienced consistent increases during the last two decades. We aim to calculate separate age-period-cohort (APC) effects for past-year marijuana use in Uruguay and Chile, which have similar epidemiologica, and demographic profiles but diverging paths in cannabis regulation.
designAPC study in which period and cohort effects were estimated as first derivative deviations from their linear age trend, separately by country and gender.
settingUruguay and Chile.
participantsGeneral population between 15 and 64 years. MEASUREMENTS: Past-year marijuana use from household surveys with five repeated cross-sections between 2001 and 2018 in Uruguay (median n = 4616) and 13 between 1994 and 2018 in Chile (median n = 15 895).
findingsMarijuana use prevalence in both countries peaked at 20-24 years of age and increased consistently across calendar years. Period effects were strong and positive, indicating that increases in use were evident across age groups. Relative to 2006 (reference year), Chilean period effects were approximately 48% lower in 1994 and approximately four times higher in 2018; in Uruguay, these effects were approximately 56% lower in 2001 and almost quadrupled in 2018. We observed non-linear cohort effects in Chile and similar patterns in Uruguay for the overall sample and women. In both countries, marijuana use increased for cohorts born between the mid-1970s and early 1990s, even in the context of rising period effects. Prevalence was consistently larger for men, but period increases were stronger in women.
conclusionsAge-period-cohort effects on past-year marijuana use appear to have been similar in Chile and Uruguay, decreasing with age and increasing over time at heterogeneous growth rates depending on gender and cohort. Current levels of marijuana use, including age and gender disparities, seem to be associated with recent common historical events in these two countries.
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