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Readable research linked to original sources
Browse normalized, publication-ready research with direct links to its evidence and source.
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Readable research linked to original sources
Browse normalized, publication-ready research with direct links to its evidence and source.
2 articles
Newest firstBackgroundQuestion-order changes in repeated surveys can distort comparisons. We want to describe the evolution of drug risk perceptions among Spanish adolescents and assessing whether the 2006 peaks in perceived risk of occasional drug use can be explained by question-order changes.MethodsThe subjects were secondary students from a biennial national survey during 2000–2012. A one-off intervention was applied in 2…
Open article record in new tab ↗Aims To estimate the effect of recreational legalization on cannabis use frequency and sources of variance across legal environments. Design Longitudinal discordant twin and gene-environment interaction models in twins recruited from birth records and assessed prospectively. Setting The United States, including states with different recreational cannabis policies before and after 2014, when recreational cannabis w…